Question: the question 3. Peter performed an experiment to determine the percentage of oxygen (by volume) in air. Below shows the set-up he used for the

the question

3. Peter performed an experiment to determine the percentage of oxygen (by volume) in air. Below shows the set-up he used for the experiment. heat At the start of the experiment, gas syringe A contained 100 cm? of air and gas syringe B did not contain air. Peter passed the air over the hot copper powder by moving the plungers of the two syringes to and fro. He kept moving the plungers until there was no further change in the volume of gas in the set-up. Then he allowed the set-up to cool to room temperature, and then pushed all gases remained into gas syringe B, He found that 79 cm? of gas was collected in B. (a) The reddish brown copper powder became black during the experiment. Suggest why. (1 mark) (b) Suggest why the volume of gas trapped in the syringe decreased during the experiment. (1 mark) (c) Calculate the percentage of oxygen (by volume) in air, (2 marks)

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Figure 9.8 shows an ER schema for a database that may be used to keep track of transport ships and their locations for maritime authorities. Map this schema into a relational schema, and specify all...

Introduction to Physical Science At Home Lab: Determining the Percent of Oxygen in Air Upon Completion of this lab, students will: Determine the percentage of the air that is composed of oxygen...

please help Data Sheet The Determination of Acid Content in Vinegar Reading assignment: Chang, Chemistry 10 edition, pages 153-156. We will use a titration to determine the concentration of acetic...

I need help with question 6, I attached the experiment information. I couldn't find anything that stated why CuSO4 is being used in this experiment. Please help! What is the purpose of using the...

Name: Chemistry 111 Laboratory Determination of Molar Masses Using Soda Bottles Report Sheet Table for Pressure /Mass Readings Trial No. Gauge Pressure (psi) 21.0 Mass of Corrected Bottle & Gas Gas...

please answer question 1,2,3,4,5 DA2 Risk For Students(2) (1) QSearch Sheet AutoSave FF Review View DComments Home Insert Draw Page Layout Formulas Data Share _ 4 AY Insert vA A General Calibri...

Question 1 Does it make economic sense for Drr to enter the US market? Question 2 If so, what would be the best offering to make? Question 3 Would it be better to provide two different offerings? If...

Solution A Solution B Kinetic Trial Deionized Water Buffer Starch 0.1 MH:0,*** 1 2 40 ml 3.0 ml 2.0 ml. 10 ml. 20 ml. 0.0 ml 5.0 ml 100 ml 100 ml 1.00 ml 100 ml 1.00 ml 1.00 ml. 100 ml 1.00 ml 0.3....

uetion1 OECD Health Statistics 2015 Definitions, Sources and Methods HEALTH STATUS (HEALTH_STAT) Access the dataset on Health Status in OECD.Stat:...

1. Problem Statement: No more than a sentence or two that succinctly identifies your problem. 2. Situation Analysis: (typically 3-5 bullet points per C, focus on those most relevant to your problem)...

the case provided below - Kaya FM Home of the Afripolitan Question 1: Besides Digital Marketing as one of the IMC strategies, propose two other important IMC elements which Kaya FM would use to get...

RepeatExercise34.5 for the casein which the mirror is convex

Look at the Tesco website. What exactly are its businesses and what do you think this tells us about its internationalization trajectory?

Drought-resistant landscapes practices are referred to as ________________. Group of answer choices xeriscaping dryscaping hardscaping rockscaping

For the problems below, choose which technique would provide the best approach: a supervised neural network, an unsupervised technique or non-linear regression with a known functional form. You have...