1. Imagine that you model your lungs as a 5 L sealed balloon at sea level: How would the pressure and temperature at 100 m below sea level affect the speed of the air molecules in your lungs compared to their speed at sea level? Assume that the temperature of your body will adjust to the surrounding temperature as you descend. Keep in mind that, in general, your breathing adjusts to keep the same number of particles of air in your lungs at different depths.

2. When is the effect of particle size on the average pressure larger, at small or at large volumes?

Show all of your work. Use the half-reaction method

Li(s)+ Co2(aq)+→Li(aq)+ +Co (s)

Mg(s)+ CuSO4(aq)→MgSO4(aq)+Cu(s)

12. For each of the four problems below, consider the two pairs of atoms/ions/molecules. Which pair (i or ii) would be attracted to one another by the strongest intermolecular interaction? Justify your answer, making sure to name the type(s) of intermolecular interaction(s) that are involved in each case. You will receive no credit without a proper justification.

a. (5 points) i) Two argon atoms OR ii) two xenon atoms?

b. (5 points) i) Two NH3 molecules OR ii) two PH3 molecules?

c. (5 points) i) A Cl- ion and a K+ ion OR ii) a water molecule and a K+ ion?

d. (5 points) i) A Cl- ion and a K+ ion (dissolved in methanol, dielectric constant 33) OR ii) a Cl- ion and a K+ ion (dissolved in water, dielectric constant 78).

a sample aqueous solution of iron(iii) sulfate has a mass of 200g, a density of 1.05 g/cm^3 and 8.35 x10^21 atoms of sulfur. What is the molarity of the solution?

Microwaves are a type of radio waves. Microwave ovens typically use microwaves with a wavelength of 12 cm. They are able to heat foods because water molecules absorb the energy of the microwave photons. If you heat a cup of water from 25°C to 100°C, how many microwave photons, on average, hit each molecule of water while it is being heated?

1. In two different experiments exactly 5 grams of fuel burns (combusts). The first experiment is under constant pressure conditions, and the second separate experiment is under constant volume conditions.

1. Which experiment is in a coffee cup calorimeter? And which is in a bomb calorimeter?
2. One experiment produces 25 kJ of heat and one experiment produces 23 kJ of heat. Which experiment (the constant pressure one or the constant volume one) produces 25 kJ of heat and which produces 23 kJ of heat? Why?
   
   Please type the answers, don't write them on a paper

32P is a radioactive isotope with a half-life of 14.3 days. If you currently have 30.9 g of 32P, how much 32P was present 9.00 days ago?

How many different glycosides can be formed by linking one D-glucopyranose and one D-galactopyranose? Explain your reasoning.

An environmental chemist working for the Environmental Protection Agency (EPA) was directed to collect razor clams from a heavily-contaminated river superfund site and analyze them for cadmium (Cd2 ) content using graphite furnace atomic absorption spectrometry (GFAAS). The chemist dried the clams at 95° C overnight and ground them in a scientific blender, resulting in ~ 50 g of homogenized dry weight. A representative 64.00 mg sample was taken from the ~ 50 g of dry material and dissolved in 100.00 mL of 0.1 M HCl to create a sample solution. Using the method of standard additions, the chemist prepared five standard solutions in 100.00-mL volumetric flasks, each containing 5.00-mL aliquots of the sample solution. Varying amounts of a 89.0 ppb (μg ·L-1) cadmium standard were added to each of the flasks, which were then brought to volume with 0.1 M HCl. The solutions were then examined for their Cd2 content using GFAAS, resulting in the following absorbance data.

Determine the amount of Cd2 per gram of dry clam. Express your final result as milligrams of Cd2 per gram of dry clam

Codeine (C₁₈H₂₁NO₃) is a narcotic pain reliever titrated with HCL. What is the pH of a 0.0500 M codeine hydrochloride solution with a pK_a of 5.80? Note the titrated form of codeine hydrochloride will act as a weak acid due to the formation of soluble ammonium salt.

Hydrogen holds promise as an environment-friendly fuel. How many grams of H₂ gas are present in a 54.0 L fuel tank at a pressure of 2501 lb/in² (psi) at 20.0°C? Assume that 1 atm = 14.7 psi.

The most important commercial process for generating hydrogen gas is the water-gas shift reaction: CH4(g) + H2O(g) ? CO(g) + 3H2(g)

?G° for this reaction at the standard temperature of 25°C is 1.423×102 kJ. Now calculate ?G°1150 for this process when it occurs at 1150 K.

5.)Part B

Calcium sulfate, CaSO4, has a Ksp value of 7.10×10⁻⁵ . What happens when calcium and sulfate solutions are mixed to give 2.00×10⁻³M Ca2+ and 3.00×10⁻²M SO42−?

Calcium sulfate, , has a value of 7.10×10⁻⁵ . What happens when calcium and sulfate solutions are mixed to give 2.00×10⁻³ and 3.00×10⁻² ?

6.)Part A

The addition of which of the following substances will not affect the existing equilibrium in a HF solution?

7.)Part A

Calculate the pH of a solution that is 0.27 M in HF and 0.11 M in NaF.

Express your answer using two decimal places.

when you would want to use collision theory over transition state theory and when you would want to use transition state theory over collision theory. Provide examples for both. Use literature citations to support your information. Follow the same formatting as requested in the group project reports.