Databases Questions and Answers July 29, 2022

Design and Implementation of a University Course Registration Database Introduction:This project involves designing and building a database system to support course registration at a university. Students will create an enhanced entity relationship ( EER ) diagram to model important entities and relationships. The EER diagram will be mapped to a

Stack S = new Stack ( ) ; S . push ( new Integer ( 3 ) ) ; Integer X = S . pop ( ) ; S . push ( new Integer ( 7 ) ) ; S . push ( new Integer ( 5 ) ) ; Integer Y = S . peek ( ) ; S . push ( new Integer ( 9 ) ) ; Integer Z = S . pop ( ) ;

Which of these is a disadvantage of laas? Vendor lock - in Latency issues Third - party providers are more prone to attacks Data privacy

plz solve no10 10. Bob is working on a C++ program and has written two files as such File Bob.h: void Bob Function1(int x) int Bob Function(double ) File Bob.cpp: #include Sinclude "Bob. int main(int arge, chars ago) int x = 3; Bob Function(); std::cout for the include, but the second line uses (2 points) ! (b) What does the pre-processor do when

Problem 2.1 Using the layer model in Figure 2.5, describe the ordering and delivery of a pizza, indicating the interactions at each level. User data Application byte stream TCP header TCP segment IP datagram header Network header Network-level packet Figure 2.5 Protocol Data Units (PDUs) in the TCP/IP Architecture

2379 Write a Matlab function CHECKINPUT that accepts (up to) four inputs and returns the number of input arguments being passed to that function as a single variable NumArg. Assume the number of inputs passed will be four or less. % Function name: CHECKINPUT % Purpose = returns the number of input arguments being passed to that function % Do not

Suppose that a School olfers several courses; each course has several sections, A specific COURSE must exist before creating a specific SECTION of the course. In this case, what cardinality will appear for the relationshin between COURSE and SECTION in the ERD?

Which of the following flags is used to restrict the memory utilization of a container? Answer choices Select an option - mem - - mem - - m - m

8. A candidate is required to answer 7 questions out of 12 questions which are divided into two groups, each containing 6 questions. He is not permitted to attempt more than 5 questions from either group. In how many ways he can choose the seven questions

Write a program that will use a FOR LOOP that will set a range with a STEP value of 2 . The output would be: 3 5 7

(1) Prompt the user to input a wall's height and width. Calculate and output the wall's area (integer). (Submit for 2 points). Enter wall height (feet): 12 Enter wall width (feet): 15 Wall area: 180 square feet (2) Extend to also calculate and output the amount of paint in gallons needed to paint the wall (floating point). Assume a gallon of paint

Write a class called Calculator that performs simple integer arithmetic on the command line arguments. Your application will take a single integer followed by an operator (see below), followed by another integer. Your Calculator class must support the following operators: additions (+), subtraction (-), multiplication (x), and division (),

Java Project We have all been there, the irresistible face of a cute kid selling tasty cookies. They're everywhere... at the store, knocking on the door, in the parking lot... Your objective is to create an ArrayList project that keeps track of the variety of cookie you ordered and the quantity. You will also keep track of your total number of

Need help to write code, please do not copy any other code and please comment on everything so i can understand Procedure - For this assignment you muat write al code in x86 _64 assombly (but you may uso/call c functions in your assembly codel. - Al code should be in one socise file only (asm program,atimp - You may reuse code from ary of my

The _ _ _ _ _ _ _ phase of incident response focuses on restoring normal operations. Group of answer choices recovery detection analysis preparation

Which planning phase involves formulating and prioritizing SMART incident objectives and identifying appropriate strategies to meet incident challenges? A . Understand the Situation B . Prepare and Disseminate the Plan C . Establish Incident Objectives D . Develop the Plan

CUSTOMER Customer ID Customer Name Customer Desc Customer Category PRODUCT Product ID Product Name Product Desc Product_Type SALES Product ID Customer ID Region ID Time ID Sales Profit REGION Region_ID Street City State Country TIME Time ID Day Week Month Year Figure 1. A Sample Star Schema 4. Based on the generated snowflake schema, please write

Guardians, G Student, S Teacher, T 1 G1 S1 T1, T2, T3 2 G2 S2 T4, T5, T6 3 G3 S3 T7, T8, T9 4 G4 S4 T10, T11, T12 5 G5 S5 T13, T14, T15 6 G6 S6 T16, T17, T18 Solve manually. The teachers must attend all the meetings with students without clashes. It is not compulsory for Guardians to attend. Schedule the timetable without clash for Teachers to

1) Only single-table views are updatable with SQL modification statements. True False 2) The WITH RESTRICTIONS OPTION clause of the CREATE VIEW statement prevents side effects from occurring when a view is updated. True False 3) The following SQL statement is an example of a Type II nested query: SELECT StdSSN, StdFirstName, StdLastName, StdMajor

I need coding format for this project 2. Develop a VB project that enables the user to enter a text into a text box. Use an If. Then construct in one form and a select case in a second form to determine whether the text entered is a circle, triangle, square, or pentagon The user should be able go to either forms by clicking on "NEXT" button. Each

1. For the six-bit binary values given below, find the equivalent decimal values when the data is interpreted as signed or unsigned integers, respectively. 010000, 100001, 010111, 111000, 111001, 001111, 101011, 110110, 101010, 100011 1

Please help with the questions

How to print out which students have a score of 5 or less. Output the student number of each student who earned a score of 5 or less. Java code. Thank you in advance! Should output: "The following students have at least one score

While going over your expenses, your financial adviser noticed that you have been eating out too often lately. He suggests that you cut down your restaurant bill and put the money saved into your IRA instead. Considering taking his advice, you decide to develop a program to help you and other users estimate the financial impact of this proposed

Q15: (3 points) Assume a given institution with three main departments (sub-nets), which uses class B IP addresses. Department A (around 214 hosts ), department B ( around 26 Hosts), and C ( around 100 hosts ). Give the subnet mask for each departments in order to make a good utilization of the addressing space

Complete The Table Shown Below? # Class Description TopListener 1 on Provides a UDP peer with the possibility of multicasting. 2 Allows easy access to data of stream sockets. 3 Implements the Berkeley sockets programming interface. 4 5 WebRequest WebProxy 6

Read the following and complete question 1 to 11. Use a UML diagramming application such as ArgoUML to draw your diagrams. Present your answer in a single PDF file. Alternatively, create a web-app, such as the ATM application on the Moodle website. Spring Breaks R Us (SBRU) is an online travel service that books spring break trips to resorts for

Consider an ordinary binary heap data structure that supports the instruc- tions INSERT and ExTRACT-MIN in logarithmic worst-case time (i.e., in O(log n) worst-case time if there are n elements in the heap). Assume that the heap is initially empty and that n elements are inserted into the heap over time. Give a potential function that can be used

Prepare and configure the following network using Packet Tracer, Save the file with your ID-name as the file name. PC- GOJO GO/ PC-3 IT Dept COMPANY Engo-Depe GATEWAY Addressing Table: DEVICE INTERFACE IPV4 ADDRESS IPV6 ADDRESS GO/O 172.26.1.1/25 2001:DB8:1:1::1/64 ACT G0/1 172.26.1.129/26 2001:088:1:2::1/64 local-Link FE80::1 PC-1 NIC

Grouping data into significant pieces to reveal trends is known as Data mining Descriptive analytics Decision analytics Predictive analytics

When a user requests a web page that consists of some text and three images using a persistent HTTP connection, the client will send at least two request messages and receive four response messages. Group of answer choices True False

When setting up a parameter query with a specific data type, if a user attempts to use a parameter value with the wrong data type, the user will see a ( n ) message rather than incorrect query results .

Question 8 What does the command git reset HEAD

Modifying Exercise: (Computer- Assisted Instruction Reducing Student Fatigue) One problem in CAI environments is student fatigue. This can be reduced by varying the computer's responses to hold the student's attention, so that various comments are displayed for each answer as follows. Possible responses to a correct answer Very good! Excellent

Suppose there are a number of random numbers, such as 3 9 8 , 8 5 , 9 5 7 , 3 5 , 9 . . . We need to save and organize these numbers, so that we can run find ( key ) operation efficiently. Which of the following data structures can give the most efficient performance for find ( key ) ? Red - Black tree Hash table ( with load factor very small and

Which of the following is not a type of error alerts style present in the Error Alert tab of the Data Validation dialog box? Information Warning Stop D 0 Lexical

ou are given a boolean expression consisting of a string of the symbols true , false , and , or , and xor . Count the number of ways to parenthesize the expression such that it will evaluate to true. For example, consider the expression T or F xor T ( T and F represent true and false ) . It can be parenthesized in two ways: ( ( T or F ) xor T ) ,

unyocc.open.suny.edu/webapps/assessment/take/launch.jsp?course_assessment_id=_89580_1&course_id=_41463_1&content_id= 15840 QUESTION 10 Write a single line of code which declares a variable to store a persons letter grade (i.e. A, B, C, D, or F). Initialize it to F T T T Arial 3 (12pt) v Path: P Words:0 QUESTION 11 Write a single line of code which

,,

Question 1: G= 1 H=6 (a) Give ONE (1) application of Least Square method in Adaptive Control Systems. Justify your answer by describing one structure of controller. [Berikan SATU (1) penggunaan kaedah kuasa dua terkecil dalam system kawalan suai. Berikan justifikasi terhadap jawapan anda dengan menerangkan satu struktur pengawal:] (5 Marks/

,

Part III: Building Burgers 6 points) (Place your answer to this problem in the "burger.py" file Burgers-To Go has hired you to develop a new food ordering system for its customers. Each customer will type in a code representing the structure of his or her order, and your program will calculate the total cost of the order An order ode is define 1

Question 4 3 A program or collection of programs that enable the hardware to process data is known as software database executive information system IT platform

The University of Giving System (GUS): It is an institution. They need to develop a system for registering students. You are currently working as a system engineer at GUS and have been asked to manage this project. After many interviews with various staff and students, I received the following description about the registration process: The

Using the Graphics object g, create the following shapes: 3) Draw a line connecting the points 20, 40 with 120, 80

,

Which of these is not a benefit of Desse? a) reduced data redundancy b) decroased security c) imarbved data incegrity d) ease of data maintentince Question 8 io.25 paintv What bs the function of ayth esitry formen? a) Dati entry forme are thed to bef securtr mars and triok ditabase acses? privilefes. ati

Problem 1. (a) Write an algorithm to list all subsets of a finite set. (b) Write an algorithm to list all subsets of a fixed size of a finite set. Problem 2. We covered the binary search algorithm in class. The ternary search algo- rithm locates an element in a list (which we assume is of length 3k) of increasing integers by successively splitting

CPTR213 Assignment 1 - Creating Data Models Instructions: use the Client, Dependents \& Health Insurance Tables to answer the questions Table: CLIENT Table: HEALTH INSURANCE Table: DEPENDENT 1. Create the data model for the tables above using the crow foot notation. Show all: i. Entities ii. Attributes iii. Relationship type iv. Primary key v.

,

TP 4 . Designing Your User Interface with Views Create a Todo List android application Todo list is an application that allows the user to create a list of tasks you need to complete or things that you want to do . Todo List Coca Tomato Potato Ketchup Sting Users can create an item by clicking on + button. It opens the input item page.

PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PART 1 PART 2 PART 3 PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL PARTS IN JAVA PLEASE COMPLETE ALL

,,

1- Explain the functions of a bridge and how it does work. You answer should include the following: LAN X Bridge / REMOS LANY Computer A Computer B Computer C Computer a. A host send a packet for the first time b. The function of the filter table. c. How does a bridge make decision whether to forward a packet or not. d. What does a Bridge do when

gradeBook.txt Melanie 84 Danielle Marie 90 Nicolas Raul 87 Michael 67 Joshua 46 Alexis Michelle 90 Jared M. 55 Andres Gabriel 78 Pierre Louis 80 Charles 60 Cin Lian 95 Carlos Manuel 81 This is an intro to C++ class, please do not include advance code. These are the libraries I can use for this project. #include #include #include #include Visual

You are given the following heuristic function for the Traveling SalesPerson Problem (TSP): h(n) = distance to the closest unvisited city. Answer the following questions: 1. Is this heuristic admissible? Explain your reasoning. 2. Show an example of a TSP where the Greedy-Best-First algorithm with this heuristic finds an optimal solution. 3. Show

3a Please code in language: Ocaml The Fibonacci k-step numbers are a generalization of the Fibonacci and Tetranacci sequences, where F i = 0 for i 0, F1 = 1, F 2 = 1, and for every j 3: F j = F j-1 + F j-2 + + F j-k , (a) TODO : Implement an OCaml function sum_top_k : int -> int list -> int, which accepts an integer k along with a list of

i have these images (1st image) BUT i want to make it like the second & third images (professional) what program i use or how do i add/change the objects around it or the color ??? (you see how computer wise it looks like) is there like a special software that we can virtual insert objects like in this room OR a software that makes it look like

,,

Moving to the next question prevents changes to this answer. Question 1 Let x be the length of a shortest path from h to f . Modify the graph by adding 2 to all weights. For example, the weight of the edge ( h , a ) will be 2 + 2 = 4 , etc. Let y be the length of a shortest path from h to f in the modified graph. Find the product of x and y , that

Hamming , will read in an integer k and a bit string s from the command line, calculate the Hamming Distances, and prints all bit strings that have Hamming distance of k from s . Note: The Hamming Distance is equal to the number of bits in which the two strings differ. A sample run would be as follows. > java Hamming 2 0 0 1 1 1 1 1 1 1 0 0 1 1 0

Lab Assignment # 2 - COMP 212 [Visual Studio - C#] Lab Assignment # 2 - Programming 3 Exercise 02 (5 marks] Implement an extension method for built-in class String Builder to count the number of words contained in a StringBuilder object. For example, if a StringBuilder object sb="This is to test whether the extension method count can return a

Use the following to complete the question ArrayList, where E means a reference type for its items 1. Add a new package named hw2p2 to the project. a. Right click the package and add a new class named Operator without a main() method. b. Add another class named Launcher with a main() method. You will see Launcher.java in the Package Explorer, too.

Question# 3 : ( Select all answers that are true ) Which of the following SQL queries uses proper syntax and displays sales reps in the city of Auburn sorted by last name and then on first name ( select all that are correct ) : a ) SELECT * FROM rep WHERE city is 'Auburn' ORDER BY last _ name, first _ name; b ) SELECT * FROM rep WHERE city =

Complete the following code skeleton to declare a class named Date. The class should contain variables and functions to store and retrieve a date in the form m m d d ? yyyy .

Data encryption takes place with asymmetric keys because encryption is faster with asymmetric keys as compared to symmetric keys. True False

Write a MATLAB function which fits an appropriate surface (y = a0 + a1x1 + a2x2) to the given data set. Verify the result using MATLABs fit function. A data set is given below(in 3-dimensional space) 2 1 0 12 19 50 68 2 3 92 3 3 81 4 5 128

Write a program in assembly language that checks the contents of 2 0 0 0 through 2 0 1 0

Based on the contents of the CUSTOMERS table, which SQL statement will display the customers residing in the same state as customer# 1 0 1 3 ? Select one: a . SELECT customer# FROM customers WHERE customer# = ( SELECT state FROM customers WHERE state = ' NJ ' ) ; b . SELECT customer# FROM customers WHERE state = ( SELECT state FROM customers WHERE

( Display two messages ) Write a program that displays Meron Ghebrihiwet and "I am learning to code with C + + " .

Croato dbconnect.php file to connect to tho OHEC_Your database In MYSQL OF PhpMyAdmin (2 Marks) d Create Add_Process.php filo, first read all the form field values sent from Add_Bill.html file and apply the server-sido validations on the form fields before add/Insert the new record(s) Into the table Apply the following data validations upon the

Creating card game SET in Java and below I have code that determines if the random set of cards is a set or not, but when I run my code its never a set because the number that's prints out is always 0. if there are 0 shapes its never going to be a set, the number that prints out should either be a 1, 2, or a three and cant seem to find where in my

microprocessor solve it correctly 1. (a) (i) Frame the control word needec to initialize an 8255 as Port A - handshake input, Port B - handshake output, Port C bits - PCL and PCU(PC6PC7) as output, \& explain. (ii) Frame \& explain the BSR con'rol words needed to initialize i.i) Port A interrupt reque:it i.ii) Port B internpt request. Both PA and

mr Jobs has contracted you to build him a machine , he only has a budget of 1 3 5 0 dollars . mr jobs reminds you that his computer must be able to support auto CAD 2 0 1 9 and the in house 6 4 bit 3 CAD program that needs to work in its own processor affinitythe minimum hardware specification are 1 TB hard drive, coolant system,mid size tower

NEED PYTHON CODE Write a Python code with recursive function definition that calculates elements of the following sequence. Remember: calculating elements is not a proof for convergence or divergence. an+1=262an,a0=5 Calculate A. a5= B. a100= C. Calculate a few more terms and based on those guess the decimal number limnan=

In cellular mobile networks, select possible answer ( s ) Group of answer choices 2 G cellular networks were primarily built on circuit switching, while modern networks like LTE - A and 5 G are built using IP networks Interference from other cells is the main problem in planning cellular networks Cells are usually divided into 3 or 6 sectors to

please explian When erecuting a foad word instruction the word is written in cache and main memory at the same time when using write through technique. Select one True false

Write program analyzeMessages(filename, minWordLengthToConsider = 1) that analyzes word frequencies in real-world text messages. Text file SMScollection.txt contains 5574 SMS messages. There is additional information about the contents of the file in the associated "readme" file readmeSMScollection.txt, written by the creators of the dataset. The

( 5 0 p t s ) In class, we discussed semaphores and monitor, it was said that semaphores are generally regarded as lower level operations than monitors. Why would we view in this way? Give one example that illustrates why this would be true?

prove recurrence formula runtime using induction For both problems below, you can assume a base case of T ( 1 ) = T ( 2 ) = T ( 3 ) = 1 . - Say you had an algorithm with recurrence formula T ( n ) < = 4 T ( n / 3 ) + 5 T ( n / 4 ) + n 4 . Use induction to show that T ( n ) = O ( n 4 ) . No need for a recursion tree on this one - only induction.

/* Print a float in binary: ftob.c */ #include #include //void float_to_string(float f, char *s, int n); void float_to_string(float,char *,int); void print_float(); #define LEN 32 #define EXP_32 8 /* ending index of s for exponent */ #define MAN_32 9 /* starting index of s for significand */ int main(int argc, char **argv) { int n=LEN; float f;

Prepare a presentation about your job and the departments where you work. You can use visual aids if you wish. The time limit is five minutes. Your presentation has five parts: - introduce yourself, give your job title and the department you work in - explain what your department does, and what you do in your job (responsibilities, ete) - explain

/**************************************************************************** * dictionary.h ***************************************************************************/ #ifndef DICTIONARY_H #define DICTIONARY_H #include //Returns true if word is in dictionary else false. bool check(const char* word); // Loads dictionary into memory. Returns true

Identify the item below that is NOT a pointing or control task: Position - Choosing a point in a one - , two - , three - , or higher - dimensional space Quantify - Specify a numeric value Consider - Waiting for a prompt Select - Choosing from a set of items.

Which of the following protocols is used for sending emails over the Internet? A . SMTP B . FTP C . HTTP D . SNMP

I need to make an instagram-like social media using java gui swing. There are User class where I enter basic user information such as username, password, followerList and a gui class that I created with the windowsbuilder named UserHome extends JFrame that have information panel personal photo and followerList. and I created a main class for

CHALLENGE ACTIVITY 2 . 5 . 1 : Acceleration of gravity. Compute the acceleration of gravity for a given distance from the earth's center, distCenter, assigning the result to accelGravity. The expression for the acceleration of gravity is: G * * M d 2 , where G is the gravitational constant 6 . 6 7 3 1 0 - 1 1 , M is the mass of the earth 5 . 9 8 1

Exercise 1.6 Using the Matlab rgb2hsv function, write a program to display the individual hue, saturation and value channels of a given RGB colour image. You may wish to refer to Example 1.6 on the display of individual red, green and blue channels

Design & Analysis of Algorithm Problem 3. (50%) The knapsack problem is that given a set of positive integers ai,, an and napsack of size s, find a subset A of (ai,, an) such that the sum of elements in A is the largest, but at most s. Part 1. Use the dynamic programming method to design an algorithm for the knapsack pro blem. e correctness of

Which of the following is true of cost - benefit analysis? Multiple Choice It shows the flow of data between departments. . It evaluates the design of data structure and content. It evaluates the frequency and criticality of automating specific tasks within a functional area. It compares the expense of completing a task with and without an

In a new file, type in the code for the generic queue interface. public interface Queue { public boolean isEmpty(); public void enqueue (Any Type x); public Any Type dequeue(); public Any Type peek(); Create your own class that implements the Queue interface. Your queue should contain a reference to the doubly linked list you made in Lab 3. Modify

Given the following C language array declaration, enter the number of bytes that are used in memory. int Point [ 6 7 ] ; Give your answer in decimal

Write each answer as an executable script file called # .sh, where -1,2,... You'll upload these files in class in our file server, inside a folder hw2 that you will create in your personal directory. 1. Print the number of words of a sentence of your choice (see echo, the pipeline operator and we with an appropriate flag) 2. Delete the standard

,

There are three major types of Active Directory service accounts. Accounts that are assigned to end users, accounts created to provide a security context for Windows services and batch processing tasks, and administrative accounts that are used for tasks requiring elevated privileges. Compare and contrast the different security considerations for

How many unique products does the company have? egin{tabular}{|l|l|} hline 806 & 658 \ hline 608 & 1214 \ hline end{tabular} Question 1/15 How many unique products does the company have? \begin{tabular}{|l|l|} \hline 806 & 658 \\ & \\ 608 & 1214 \end{tabular} Question 1/15 How many unique products does the company have? \begin{tabular}{|l|l|}

The dispatch department has contacted you with a new problem. Once they receive a new order, they have to look for each product's availability in the existing warehouses. The preference is to ship from the minimum amount of warehouses and to always ship from the warehouse that contains the maximum amount of units. For example, review the following

************************************************************************************************************************************************************ OUTLINE: // Header // Header // Header import java.util.Scanner; public class comissionShell { public static final double MAX_RATE = 25; /** Main method */ public static void main(String[]

,,

4 Exercise: Arrays and Functions Many of the tasks from the previous exercises can be generalized to functions, allowing easy reuse. Recall that arrays in C are essentially represented by pointers, so when an array is passed into a function, the function is given access to the original array data (not a copy). This means that arrays are

Question 6 (12 marks): Graph A. State the in-degree of vertex C for the graph in Figure 1. B. Give the graph's adjacency matrix. C. Is the graph strongly connected, weakly connected or neither of these? D. Find all possible topological orderings

CSCI 340 Computer Assignment 5 Spring 2018 (10 points) Binary Tree Class For this computer assignment, you are to write a C++ program to implement classes to represent a binary tree (of integers) . You are required to implement assignment5.h and assignment5.cc files. Both of them are partially implemented. assignment5.h already contains the class

According to the G 4 Record Keeping Policy and Procedure ( available on the Banksia Care website ) , what are 3 things you need to do to ensure the support plan for Hamilton is appropriately recorded and stored?

Create a function called XO ( ) that takes a string, checks if it has the same number of x s and o s and returns either 1 ( true ) or 0 ( false ) . Return 1 if the number of x s and o s are the same; otherwise, return 0 . When x and o are not in the string, return 1 . In main ( ) , read in a string using gets ( ) and pass it to the function. Print

Herriot says she wants to take $ 1 0 0 from the ATM. You provide prompts to help her to press the correct keys. She is now ready to go shopping. Herriot sees a jumper that she wants. It is bright pink and costs $ 6 0 . There are other jumpers on special for $ 2 0 not quite the same colour but still a pretty pink. The $ 6 0 jumper will use up most

Write a program that sorts the given integer values. The number of values is not known in advance. Your program will output the sorted values and the structure of the tree using given output format. (Assume for this homework study, values are distinct). Use red-black tree in your program. Input: 72 18 28 36 27 117 108 90 -1 Your output will be the

Please please please do it ASAP 5.(9 points)Consider the following log file of a database: 1) (3 points)When the system failure occurs after the Step 12(T4:Commit), how to recovery from the failure( which transaction should be redone, which transaction should be undone) 2) (3 points)Suppose we add a new checkpoint after the Step 12(T4:Commit). In

For which one of the following reactions is the value of H ? x n equal to H f for the product? I ) 2 C ( s , graphite ) + 2 H 2 ( g ) C 2 H 4 ( g ) II ) N 2 ( g ) + O 2 ( g ) 2 N O ( g ) III ) 2 H 2 ( g ) + O 2 ( g ) 2 H 2 O ( l ) IV ) 2 H 2 ( g ) + O 2 ( g ) 2 H 2 O ( g ) V ) H 2 O ( l ) + 1 2 O 2 ( g )