Chemistry Questions and Answers July 16, 2020

If you have 0.054g of fraction A, how much chloroform should youadd to make a 20 mg/mL solution?

154 (50),The pycnometer is used in ISO standard ISO 118312004, and ASTM standard ASTM D854 Specific Gravity by Hydrometer test A hydrometer is usually made of glass, and consists of a cylindrical stem and a bulb weighted with mercury or lead shot to make it float upright.,I. Introduction Determining the density, specific gravity and API is

Of the elements Na, Mg, Si, S, Cl, and Ar, identify one that fits each of the following (4.2, 4.6, 4.7, 4.8) a. largest atomic size b. a halogen c. electron configuration 1s 2s 2p 3s 3p MATOU d. highest ionization energy e. in Group 6A (16) f. most metallic character g. two valence electrons

1. Draw all the possible resonance structures for each ion. Use curved arrows to show movement of electrons. Identify the major resonance form in any and explain your reasoning (5 pts) NOTE Hand draw the resonance structures or use ChemDraw, installed in your computer. Copy the structures from ChemDraw, into Microsoft Word and save for submission.

1. Draw the Lewis structure of ethylene diamine, en. Be sure to include all atoms, bonds and lone pairs. Give the bond angles around each central atom (4 points). 2. Draw the skeletal formula of the complex ion in Cr(en)3Cl3 3HO using wedge and dashed bonds as required. Clearly indicate and name the coordination geometry about the chromium center.

1. (2pts) You need to prepare 100.0 mL of a 2.50 mM disodium pnitrophenyl phosphate solution. What mass of disodium pnitrophenyl phosphate do you need to make this solution 2. (3pts) You need 1.00 L of 0.05 M ammonium bicarbonate buffer pH 6.8. Describe the steps to prepare this buffer including the amount of solid ammonium bicarbonate you need.

Coffee Cup Calorimeter with Two Materials A 16.66 g gold ring initially at 92.3C is submerged into 50.6 g of water at 20.4C in a coffee cup calorimeter. What is the final temperature of both substances at thermal equilibriumwhen all temperature changes are complete and the final temperature of the pure gold and water are equal CsAu0.129JC 0.5 p

1. Balance equation: Ca + HCl = CaCl2 + H2 2. Balance equation: P2O5 + H2O = H3PO4 3. With the 2 equations determined which are the reactants andwhich are the products.

1. What is the atomic number of Zirconium? 2. Assuming each of the ions in this spectrum has a chargeof +1, according to this mass spectrum, what is the mass in Daltonsof the most abundant isotope of zirconium? 3. Assuming each of the ions in this spectrum has a chargeof +1, according to this mass spectrum, how many neutrons does theleast

At 1 atm, how much energy is required to heat 89.0 g of HO(s) at16.0 C to HO(g) at 119.0 C Helpful constants can be found here. Number kJ,Heattransfer constants for H0 at 1 atm Quantity Enthalpy of fusion Enthalpy of vaporization Specific heat of solid HO (ice) 2.087 J(gC) Specific heat of liquid HO (water) 4.184 J(gC) Specific heat of gaseous HO

1. The American Chemical Society uses the acronym RAMP to emphasize awareness of chemical safety in the laboratory. The RAMP system reminds us to a. Respond to the Emergency, Activate the Alarm, Move out of the Room, Put Safety First b. Realize the Problem, Address the Emergency, Make Safety 1, Protect the Environment c. Recognize Hazards, Assess

Use the following nutrition facts of Biscoff Cookies Single Pack to answer the questions below. How many grams are in a serving How many Calories are in a serving What is the Calorie per gram Show the calculation in the space below for full credit. Manual (Lab 7 Nutrition Facts 60 servings per container Serving size Amount Per Serving Calories

A. What isthe electron-pair geometryfor Cl in ClF 5 ? There are lone pair(s) around the centralatom, so the geometryof ClF 5 is . B. What isthe electron-pair geometryfor S in SF 6 ? There are lone pair(s) around the centralatom, so the geometryof SF 6 is .

Categorize each change as physical or chemical. Shredding paper Cooking tomatoes to make tomato sauce Chopping tomatoes Peeling apples Burning paper Apple slices turning brown in the air Baking muffin batter to make muffins Physical Change Combining dry ingredients (flour, salt, sugar, baking powder) when making muffins Chemical Change

1. Convert a weight of 145 lbs to kilograms. 2. What is the height of a person in centimeters who is 6.0 ft 2.0 in tall 3. An adult person has a blood volume of about 5200 mL. How many pints of blood is this 4. Convert a speed of 55 miles per hour to kilometers per hour. (1 mile 1609 m) 5. How many milliliters are in 1.00 cup

1. Copper (II) sulphate pentahydrate, CuSO4*5H2O, has 5 moles ofwater for each mole of CuSO4 in the solid crystal. The molar massfor the pentahydrate is 249.68 g/mol. Copper (II) sulphate withoutwater in the crystal structure is called anhydrous, and would havemolar mass of 159.61 g/mol. How many grams of CuSO4*5H2O should bedissolved in a volume

1. Clean a porcelain crucible and cover. Set the crucible on a triangle and ring clamped to a ring stand over a Bunsen burner. (CAUTION Crucibles are fragile and crack when exposed to sudden changes of temperature.) Begin heating over a low flame until crucible is warm, then heat over hottest flame for 5 minutes. This should burn away any material

Aluminum oxide has the empirical formula of Al2O3. a. Calculate the aluminum in Al2O3, using the chemical formula.

1. What is a back-titration? 2. Why is a back titration necessary in this experiment? 3. Calculate the number of moles of base equivalents in: a) 675mg CaCO3 b) 135 mg Mg(OH)2 - Base equivalents = number of moles ofacid (H+ ) consumed 4. Calculate the number of moles of acid (H+ ) in 33.6 mL of (a)0.10 M HCl and (b) 0.10 M H2SO4. 5. Calculate the

mations n inch 05. (pt) Convert 2.0 teaspoons to ml. Note 11 5 mL (exact). Answer 10 mL 06. (pt) Convert 98 pounds 4 ounces to kg. Round your answer to the nearest tenths 117118 of the Medical Dosage Calculations book. Answer 4.1 kg 07. (pt) An infant weighs 8 kilograms. What is the infants weight measured in pounds and ounces Hint See Example

1. Convert 16 feet into meters using the conversion factor 1 meter 3 feet. 2. A 5K marathon is equivalent to how many miles (conversion factor 1 mile 1.6 km) 3. Convert 6800 microseconds to centiseconds. (1,000,000 us 1 s, 100 cs 1 s) 4. What is a speed of 55 mph equivalent to in units of ms (1 mile 1609 m, 1 hour 3600 s) 5. What would make

1. Draw the chemical structure of veratrole. What is the mass of veratrole being used in this reaction OCH OCH 2. How many unique mononitrated products of veratrole can theoretically be produced (regardless of the directing abilities of the substituents present) Draw these potential products. 3. What kind of director (orthopara, meta, etc.) are

1) Draw a Lewis structure for IOF5 and calculate the formalcharges on each atom. 2) Draw a Lewis structure for IF5 and calculate the formalcharges on each atom. 3) Describe the bonding in the following molecules BondingMolecule Ionic/Covalent Polar/Nonpolar CS2 ____________ _____________ BaBr2 ____________ _____________ I2 ____________

1) 2-methyl propanoic acid and butanoic acid are structural ___________. 2) True or False. All the atoms in ethane dioic acid can lie in the same plane. 3) True or False. All the atoms in butanedioic acid can lie in the same plane. 4) If we hydrolyze methyl ethanoate the names of the two products are _________ acid and ___________. 5) If we

1. Draw a RutherfordBohr diagram for boron (2) 2. Draw the Lewis Diagram for the following elements (2) a. N b. Be 3. Draw the Lewis structures for the following compounds (4) a. HO b. CO 4. Balance the following reactions. Indicate the type of reaction in the space provided. (10) Fe(OH), FeO3 b. C. d. c. HO AlO3 Al O CHO HO K Mg CaSO4.

I. Convert the followings a. 15 meters to feet b. 1200 ounces to milligrams c. 5 kg to ounces d. 50 miles to km e. 2655 ml to gallons f. 8 gallons to cubic centimeter g. 310 K to C h. 108 F to K II. Write the following numbers in scientific notations a. 56709032 b. .120102 c. 0.00483 d. 0.00000009 e. 9090909011 III. Write the answers to the

2. CHO OH a. CHO b. 1. HO(CH)3OH, H 2. CH3MgBr, diethyl ether 3. H (aq) OH CHOH C. O. CHOH d. HO CHO e. none of these answers

1. Propene (C3H6) is a simple alkene. It is the second mostimportant starting product in petrochemical industry (after ethene)and is the raw material for all polypropylene plastics andproducts. a) Draw the structure of propene. Label the hybridization ofeach carbon. b) Consider the C1C2 bond in propene; Draw an energy diagramshowing the

1) To produce Na3AlF6, 14.9 kg AlO3 was mixed with 28.5 L of 15.3 M NaOH in the presence of an excess amount of HF. For an experiment in which 12.7 kg Na3AlF6 was obtained Al2O3(s) 6 NaOH (aq) 12 HF (g) 2NaAlF6 9 HO a) Determine the limiting reactant. (1 mark) b) Determine the theoretical yield (in kg). (2 marks) c) Determine the percent yield

1 How many valence electrons does potassium have 2 How many valence electrons does silicon have 0 1 3 1 4 O 1 4 How many valence electrons does arsenic have 5 How many valence electrons does neon have 8,5 Will sulfur lose or gain electrons to be like a noble gas gain lose 0 0 6 Will beryllium lose or gain electrons to be like a noble gas 7

1) Which statement is false about the solution of sodiumchloride (NaCl) dissolved in water? A) The solvent of this salt solution is water. B) The solute of this salt solution is NaCl. C) The ions from the NaCl salt crystal become hydrated and dispersethroughout the water. D) This salt solution is a non-aqueous solution. 2) What two processes are

3 slightly less than 5 5 equal to greater than 2 6 7 less than nearly 6 slightly greater than 5 nearly zero less than zero greater than zero 1. The valence electrons in nitrogen experience the shield of core electrons. 2. The shielding experienced by any one of the valence electrons resulting from the core electrons is nearly 3. For the 2s

1. write conjugate base for HSeO3- : express your answer as an ion. 2. write conjugate base for PH4+ express your answer as a chemical formula 3. write conjugate acid for BrO- express as a chemical formula

Question 1 A patient selfreports their weight as 64 kg. Convert this amount to pounds. Round your answer to the nearest whole number. Question 2 1 pts The patients order reads 7 mg per lb of weight. The patient weighs 86 kilograms. How many milligrams of medication are to be given to the patient Round your answer to the nearest whole number. 1

10. Chlorine gas (75 purity) is bubbled into pure water. Assuming all the resultant aqueous chlorine is hypochlorous acid, what is the HOCI at pH 7 in units of M a) Cannot be determined based on the information provided b) 3.0 x 102 M c) 5.7 x 102 M correct d) 7.2 x 10 M

1. Write the chemical equation for thereaction of an antacid containing magnesium hydroxide,Mg(OH) 2 , with stomach acid (hydrochloric acid, HCl) andthen balance the equation. 2. If a tablet of the antacidneutralized 41.4 mL of 0.150 M hydrochloric acid then how manygrams of magnesium hydroxide was in the tablet? (Show calculation) 3.Concentrated

1. Match each term with the best definition. Saturated solution Solute A homogeneous mixture of two or more components. A solution that contains a greater amount of a dissolved solute than is present in a saturated solution. A solution that holds less than the maximum amount of a solute. A solution that holds the maximum amount of a solute. The

A 1.21 lbs sample of water absorbs 5.98kJ of heat. if the water is initially at 25.0 degrees celcius what is the final temp? the specific heat capacity is 4.184J/g degrees celcius. 2.) If a household recycles 10.5 kJ of plastic bottles composed of PET (polyethylene terepthalat), and the density of PET is 1.38 g/mL, what volume in liters does this

17) If I wish to travel 88 mph (miles per hour) in a DeLorean. How fast would I be travelling in m s17 (1 km0.6214 miles) A) 129 m 81 B) 76 m s1 C44ma1 D) 39 m 81 E) 142 m 81 18) If the outside air temperature is 30 F, what is the temperature in kelvin A) 307 K B) 272 K C) 303 K 2 19) Which of the following statements about the phases of matter is

2. Calculate the pH (not pOH) of the following solutions. Given K104. Please list all steps for full credit (1) (3 pts) 10 MNaOH aqueous solution. (2) (3 pts) 20 g of table salt (NaCl) was dissolved in 100.0 mL of water. After boiling, what was its pH (3) (6 pts) Diluted Crystal Lye Drain Cleaner solution bought from Home Depot (5.6 (ww) NaOH in

a. Complete each nuclear equation. Give all nuclei in the form b. C. 90 39 Y 210 83 Bi 90 Zr 07 40 135 59 Pr 0 e 2 attempts left 4 He 2 Check my work A X.

10. Bill requires 600 grams of a salt for a certain reaction. He received 1.5 pounds of this salt. Is this enough to complete the reaction (note 1 pound 454 grams (3 pts)

17) What is the relationship between Ka and Kb at 25C for a conjugate acid base pair17) A) KaKb 1 x 1014B) KbKa 1 1014 C) KaKb 1 x 1014D) Kax Kb1 x 1014 18) What is the conjugate base of the BronstedLowry add HPO42718). A) HPO42B) H2PO4C) PO43D) H3PO4 The following pictures represent equal volumes of aqueous solutions of three acids HA (AX, Y,

3. Metric Conversionsshow all work 1) 1cm 3) 3cm 1m 3m 1km 3km 5) 7) 9) 11) mm 1m 1 km 1 cm 7) 9) mm cm cm EE 10 m 100 cm 200 mm 2) 4) 6) 8) 10) 12) 10 cm 1 cm 1 km 1 cm 40 cm 2cm 4cm 2m 4m 2km 4km Which is the most Circle the largest amount in each box. 100 m 500 cm 1 km mm 1 km 80 cm 3cm 2 km 500 cm mm cm m Use greater than (), less

1. Gold has a specific heat of 0.129 Jg.C. If 1377 kJ is needed to increase the temperature of a sample of gold by 99.9C, what is the mass of gold in lbs (pounds),2. Deadlifting involves raising a loaded barbell from the floor to a position above the head with outstretched arms. Determine the work (in Joules) done by an athlete in deadlifting 300

2. Is the following hormone, Prostaglandin E (PGE), water soluble Explain in terms of intermolecular forces. HO HO OH

2. Chlorine (C1) has two isotopes, 35Cl and 37C1. Identify the number of protons, neutrons, and electrons in each isotope. What atomic component is responsible for the existence of the two isotopes (Refer to Section 2.3)

1.calculate moles of product 2.determine limiting reactant 3.calculate grams of 1,4-dimethoxybenzene 4.calculate mole ratios for reactants

REAGENTS Reactants Solvent Catalysts 1. Hydroquinone dimethyl ether (1,4dimethoxybenzene) 2. tbutyl alcohol Acetic acid, 20 ml Conc. Sulfuric acid, 20 ml Calculate the amounts of the reactants required to yield 10.0 grams of 1,4ditbutyl 2,5dimethoxybenzene assuming a 100 yield. Use this theoretical amount of 1,4dimethoxybenzene. Use a 30 excess of

2. Which of the following is the correct formula for the ionic compound that would form between calcium and phosphorous? A. CaP B. Ca3P2 C. Ca2P D. Ca2P3 E. Ca3P

22. (9 points) For each of the compounds below illustrated as line structures, provide (1) condensed formulas, (2) Lewis structures, and (3) identify the compound as either an alkane, alkene, alkyne, arene (aromatic), alcohol, carboxylic acid, aldehyde, ketone, ether, ester, amine or amide. H3C HC HC. H3C. CH3 CH3 CH3 CH3 CH3 alkene alkane Ketone

A 2.5 carat diamond costs 8,500. (1 carat=200mg). What is theprice of one carbon atom in this diamond? (diamonds are 100%carbon)

20. The molecular formula for hydrogen peroxide is HO. Please draw the structural formula (as a Lewis diagram) to indicate that you understand the molecule. (i) Lewis Diagram explain (ii) What is the total number of degrees of freedom for this molecule explain (iii) In the table below identify the different degrees of freedom for the molecule.

Name (select) (select) Be sure to answer all parts. Give the name and the formula of the compound formed from the following elements (a) cesium and phosphorus Formula (b) barium and sulfur Name (select) Formula (c) fluorine and aluminum Name (select) (select) Formula 3 attempts left (select) Check my work

3. The compound dihydroxyacetone (DHA) is used in sunless tanning lotions, which darkens the skin by reacting with the amino acids in the outer surface of the skin. A typical drugstore lotion contains 41.0 (massvolume) DHA. a. Draw a condensed structural formula of DHA. b. Identify the functional groups in DHA. c. What is the percent composition

3) The chemical formula of ammonium dichromate is (NH4)2Cr2O7. If you have a 12.50 g sample of this compound... a) How many moles of ammonium dichromate do you have b) How many moles of oxygen atoms do you have c) How many hydrogen atoms do you have d) How many grams of chromium do you have e) How many ammonium ions do you have

3. Poly(hexamethylene adipamide)or nylon 6,6is a high mechanical strength polymer commonly used to make fibers for a range of applications, including textiles, carpeting, and molded parts. While usually semicrystalline in nature, it is possible to produce totally crystalline nylon 6,6. At room temperature, crystalline nylon 6,6 exists in a

please show step by step guide and explain method used for solving... Thanks!

3. Convert 42,000 ug to ng 4. Convert 0.034 L to cL 5. Convert 9.6 Mg to kg Answer (Sci Notation) Answer (Dec. Notation) Answer (Sci Notation) Answer (Dec. Notation) Answer (Sci Notation) Answer (Dec. Notation)

26. What is the pH of a 0.1M solution of ascorbic acid? Forascorbic acid, pKa1 = 4.10, pKa2 = 11.79. a. 1.05 b. 2.55 c. 2.76 d. 3.58 e. 4.40 27. b is the answer 27) In a solution buffered by 40 mM Tris, pH 8.6, what is theconcentration of the conjugate base Triso ? (For Tris, pKa =8.1). a. 5 mM b. 10 mM c. 20 mM d. 30 mM e. 40 mM d is answer 28.

2. Un compuesto gaseoso que contiene 30.4% N y 69.6% O pesa 5.25 g y ocupa un volumen de 1.0 litro a una presin de 1.26 atm. y -4oC. La frmula molecular del gas es: a. NO b. NO2 c. N3O6 d. N2O4

2. The specific heat capacities of iron, silver, and gold are 0.45 Jg C, 0.24 Jg C, and 0.13 Jg C, respectively. Which of the three metals is the best conductor of heat energy Explain.

20 mL is often considered an ideal titration volume toneutralize the acid or base solution. How many grams of KHP do youneed to neutralize 20 mL of 0.1 M NaOH solution?

A 28.2 g sample of beryllium at 96.7C is placedinto 67.5 mL of water at 20.2C in an insulatedcontainer. The temperature of the water at thermal equilibrium is32.0C. What is the specific heat of beryllium? Assume a density of1.00 g/mL for water. (See this table.) J/(gC) Constants Used In This Book (experimentalvalues) Constant Value Units Usage n

3. Indicate the names and common charges for each group on the periodic table below. Four of the eight groups have special names. Indicate those as well. (Disregard the lanthanides, and actinides)

4. Mr. Chandra Bahadur Dangi, from Nepal, was the shortest person to have ever lived (and been precisely measured). He was 54.6 cm tall and lived to be 75 years old. Wikipedia, List of the verified shortest people. Lets compare him to the average 20year old US male at 198 lbs and 5 feet 9 inches tall. Healthline, Whats the Average Weight for Men

4. Human blood is slightly basic in nature with a normal pH range of 7.357.45. The blood pH is maintained by the carbonic acidbicarbonate buffer system, shown by the following equilibrium reaction. HCO3 HO H3O HCO3 a) If you add a small amount of an acid to this buffer, then which component of the carbonic acidbicarbonate buffer will react with

4 Al(s) 302(g) 2Al2O3(s) How many grams of Al2O3 can be formed from 79.33 g of Al and 35.15 g of O (Hint You need to determine which one is the limiting reactant). Your Answer Answer units

4. What was the effect of the Cu(NO3)2 catalyst Describe how you could determine whether the presence of this catalyst affected the activation energy. Yes.

400 3200 3000 2800 2600 2400 2200 Wavenumbers (cm1) 2000 1800 1600 P 1400 1200,What peaks were presentshould be present in camphor vs. starting material Give the signal value and tell what bond it represents. Based on IR, was there any starting material What was the purpose of adding sodium bisulfite at the end of the reaction Explain the

4. Give the orbital box diagram for the ground state configuration of bromine. 5. What is the electron configuration for silver in the ground state, for Ag2 and for Ag1,Give the name and symbols for two ions that are isoelectronic with argon. 8. Find the possible values for the quantum numbers of the highest energy electron in a. magnesium b.

Ans: C Please explain why the answer is C. Thank you.

22. A scientist runs a kinetic analysis and generates the following data Potential Energy Reaction Progress She then proposes the following mechanism. Which rate law is consistent with these data and the proposed mechanism A. Rate KobsClO2 B. Rate Kobs Cl202 C. Rate KobsClON D. Rate Kobs ClON E. Rate KobsCI0 Cl (g) O2 (g) ClO2 (g) ClO2 (g)

4) How many grams of potassium azide (KN3, MM 81.118 gmol) are present in 250.0 mL of a pH 4.20 buffer solution containing 0.500 M hydrazoic acid (HN3) The Ka of hydrazoic acid 1.90 x 105. (Aqueous, 25 C)

5. Sodium benzoate is the conjugate base of benzoic acid and it is used as a food preservative. How would you make a buffer solution based on this system to have a pH 5.0 6. What part of the titration curve of a weak acid corresponds to the buffer region Explain.,7. Calcium carbonate is sparingly soluble in neutral water. Write out the equation

4. Give the product of the following reactions and in each case give a detailed reaction mechanism by which it is formed. (50 pts) (a) (e) CH3O H3O HO, heat CH C5HO4 CHN (b) NaOH, HO EtOH 1. NaOCH, HOCH3 OCH3 2. HO bi OH HPO4 1. LDA, THF, 78 C 2. Br

6 9 12 15 18 Question 4 (1 point) Carbon tetrafluoride has a higher boiling point than boron trifluoride. This can best be explained by stronger dispersion forces between carbon tetrafluoride molecules than boron trifluoride molecules boron trifluoride is polar, carbon tetrafluoride is not carbon tetrafluoride having greater polarity than boron

1.4 x 10. 3. The acid dissociation constant of chloroacetic acid, CHCICOOH, is Ka Provide an explanation for the difference in Ka between chloroacetic acid and acetic acid. (Hint consider the structure of each molecule and the electronegativity of the atoms in it).

Help on these two

8. At 500.0 K, one mole of gaseous ONCI is placed in a oneliter container. At equilibrium it is 9.0 dissociated according to the equation shown here 20NCI 2NO Cl Determine the equilibrium constant. A 9.1 x 101 B 4.4 x 104 C 2.2 x 104 D 1.1 x 10 E 2.2 x 102 9. Consider the reaction H 122HI whose K 54.8 at 425C. If an equimolar mixture of

Draw the structure

8. BeCl2 Name Lewis Structure Hybridization of Central Atom(s) Bond Angles 3D Drawing Molecular Shape Polarity

If you had added 1.7 mL of methanol (M.W.32.0, d 0.791 g/mL) to a 25 mL round-bottomflask, how many millimoles of methanol would you haveused? Enter your answer using no decimal places(45). Include the correct abbreviation for the appropriate unit

Please include all steps. thank you

8. What is the density of propane gas (C3H8, 44.1 gmol) at 25C and 0.8553 atm a. b. c. d. e. 1.54 gL 3.55 gL 18.3 gL 2.05 gL 1.17 gL

Question 2 8 pts Consider the elements selenium (Se) and bromine (Br). Which statement below correctly compares their atomic radii O Se has a smaller atomic radius than Br because the valence electrons in Se occupy a higher energy level than in Br. O Br has a smaller atomic radius than Se because the effective nuclear charge of Br is larger than

9. Where are metals found in the periodic table Are most elements metals, nonmetals, or metalloids Where are elements that are gases found in the periodic table 10. What does it mean if two particles are ISOTOPES of each other What do they have in common How do they differ (You should use the words protons, electrons, and neutrons in your answer).

613 2 of 5 A The pH of a vinegar solution is 5.72. What is the pOH of the solution 8.28 5.72 b.socrative.com ATCCHEM1211 4.17 1.90 x 106 M SUBMIT ANSWER LTE Socrative

Alkali and alkaline earth metals react with oxygen to form oxides, peroxides, and superoxides. (a) Indicate the most likely product for each of the Group I and Group II elements. (b) What physical factors are responsible for the relative stability of oxide vs. peroxide vs. superoxide? (c) Even if the oxide is the most stable product formed from a

please draw all isomers of C4H6 and their observations.

Avata Alkynes Isomers of C4H6 Sibel Observations Mbx Cuclic and Acyclic Compou

The analysis label on a 500 mL bottle of Fiji Natural ArtesianWater reports pH = 7.5 and 140 mg of bicarbonates, HCO3- .Calculate the pH expected as a result of the bicarbonates to see ifthese two numbers are consistent with each other. ( K b = 2.4 x10^-8 for HCO3-)

why is the answer c instead of B

9. The name of PbO2 is A) lead dioxide. B) lead(II) oxide. C) lead(IV) oxide. D) plumbum oxide. E) lead oxygen. Answer C

Which amount is equal to 1 liter 0 0.01L O 1 dm O 1 cm O 0.1 m Question 24 Which amount is equal to 1 mL 0001L 1000 cm O 1 dm O 1 cm

Please help! Need help within 1 hour.

Provide IUPAC name for CH H 4 IN C H CHS 5 () HC Alkane Nomenclature 8 ethyl CHS 3 CHI 7 t dye HC the following 42 H d H C3 2 H3C CHS C Hc H H FP H H HCH CH3 dat3 H CH Xx CH3

When ammonium nitrate undergoes decomposition, only gases are produced, according to the equation NH4NO3(s) N2O(g) + 2H2O(g) What is the total volume of gases produced at 546 K and 1.00 atm pressure when 240 g of ammonium nitrate undergoes the above decomposition reaction? A) 9 22.4 L B) 3 22.4 L C) 12 22.4 L D) 18 22.4 L E) 6 22.4 L

An aqueous nitric acid solution has a pH of 2.15. What mass of HNO3 is present in 20.0L of this solution? Please write down step by step:)

(Ar)4s23d104p3 is the electron configuration of an___atom a)Sn b)V c)P d)Sb e)As The energy of a photon that has a frquency of 8.21x1015 s-1 is________J A)1.26x10-19 b)8.08x10-50 c)1.24x1049 d)5.44x10-18 e)1.99x10-25

give the correct names for the structures drawn (1.e. AE) or draw the structure for each of the names given (1.e.) FG) for the compounds below, and use the cistrans, RS labeling when IRchloro25methylCyclobutane F C(CH),CHFC(CH),CH,CHICH(CH).JCFCHCH(CH), E CI lelodo5(trans) bromo3(trans)ethyl2(trans) cyclopentylcyclohexane Note, all of the groups

10 8 01 6 4 0 Acetic acid titrated with NaOH 2 curve. A buffer region Volume of NaOH (mL) added The acetic acidacetate buffer graph looks similar to the region 6 How does the titration curve of acetic acid compare to the graphs involving the acetic acid acetate ion buffer in this experiment (a1 and b1) 2 8 2 on the weak acid titration curve. of

Report Table EX.3 Converted Data Set C Temperature measurements converted to degrees Celsius Measurement 1 Measurement 2 Measurement 3 Measurement 4 Measurement 5 Temperature (x, C) Table view List view Tire Pressure (y, psi) 3.3910 34.25 2.6810 3.50x10 36.53,(5pts) Graphing Data Set C Tire pressure is, in part, a function of the temperature of

(8pts) Conversions with NonMetric Units From the procedure Complete the following conversions with nonmetric units. Report your answer to each conversion with the correct number of significant figures. (2pts) If 2.54 cm 1 in, convert 25.1 m to inches (2pts) If 1 mile 1.609 km, convert 14.9 miles to kilometers. (2pts) If 1 liter 1.0567 quarts,

On January 1, 2022, Metlock, Inc. purchased equipment for 48600. The company is depreciating the equipment at the rate of 680 per month. The book value of the equipment at December 31, 2022 is O 8160. O 48600. O 40440. O 0.

isotope 24 Mg 25 Mg 26Mg mass (amu) percent abundance 23.985042 78.99 24.985837 10.00 25.982593 11.01 What is the value atomic massx fractional abundance for 26Mg For now, report your answer to three decimal places. Mass contribution of 24Mg 18.946 amu Mass contribution of 25Mg 2.499 amu amu ass of mag,t ot pt pt pt pt 1 pt isotope mass (amu)

This is for Analytical Chemistry. I NEED help with this TONIGHT.PLEASE Assume the range in which the human eye detects color change isfrom 10% to 90% of the indicator dye reacted. Write the balancedchemical equation for the acid dissociation; let HIn representthe color indicator. Make an ICE table showing either 10% or 90%dissociated and compute

What is the average concentration of NaOH solution provided theaverage mL of NaOH added in 3 titrations? I have provided some ofmy previous answers for reference. Thanks. 2. Amount of benzoic acid to be neutralized by 20 mL NaOH solution,in both moles and grams: NaOH [M]= 0.020 L*0.494 M= 0.00988 M Benzoic acid [M] = 0.00988 moles Benzoic acid

entify the atomic number and the chemical symbol for lead, silver, and gold. rag each item to the appropriate bin. Hints symbol Pb Lead atomic number 79 symbol Ar Gold symbol Agi symbol Fe atomic number 82 atomic number 47 Silver symbol Au atomic number 26 Reset Help atomic number 18 Does not apply