To a 150.0mL volumetric flask are added 1.00 mL volumes of three solutions: 0.0100 M AgNO_3, 0.225 M NaBr, and 0.100 M NaCN. The mixture is diluted with deionized water to the mark and shaken vigorously. What mass of AgBr would precipitate from this mixture? (Hint: The K_sp of AgBr is 5.4x10^-13 and the K_f of Ag(CN)₂^- is 1.0x10²¹)

Consider the reaction of I2 (g) described by I2 (g) = 2 I (g). The total pressure and partial pressure of I2 (g) at 1400⁰C have been measured to be 36.0 torr and 28.1 torr, respectively. Use these data to calculate KP⁰, K⁰c, and Kx at 1400⁰C. Calculate xI under these conditions? What would X₁ be if we decreased the total pressure to 36.0×10-6 torr? What would X₁ be if we increased the total pressure to 36.0 atm?

Consider the combustion of methane in oxygen (a reaction we've seen when we've lit soap bubbles on fire), which is a highly exothermic reaction.

True or False - Once the activation energy has been reached, increasing the temperature will have no effect on the rate of the reaction.
True or False - A mixture of methane and oxygen can be kept in the same container indefinitely at room temperature with no change because there are no collisions taking place between the molecules.
True or False - Once the activation energy has been reached increasing the concentration of methane and oxygen will increase the rate of the reaction.
True or False - A successful collision (one that leads to the combustion of methane) will have sufficient energy and any orientation between molecules.

Hydrogen with 1s^2 would be similar to what other elements? Is this element paramagnetic?

If the volumetric procedure yields more accurate results, why perform the gravimetric procedure at all?

NADH and FADH2 are often considered “energy currency” in cellular metabolism because they are generated
directly from Glycolysis and the TCA cycle. Using the following half-cell potentials, calculate the Gibbs Free Energy
that can be derived from the oxidation of NADH and FADH2. Use the Faraday Constant at 96,500 J/V mol.
FAD + 2H+ +2 e- = FADH2 Eo = -0.219V
NAD+ + H+ + 2 e- = NADH Eo = -0.320V
a. 21.3 and 30.8 kJ/mol
b. -21.3 and -30.8 kJ/mol
c. 42.3 and 61.8 kJ/mol
d. -42.3 and -61.8 kJ/mol

A 150.0 mL gas tank contains 51.2 g of oxygen gas and 32.6 g helium gas. What is the total pressure in the tank? What is the partial pressure of oxygen?

A. Calculate the solubility of silver chloride in a solution that is 0.150.

B. 120.0 −mL sample of a solution that is 2.8×10−3 M in AgNO3 is mixed with a 225.0 −mL sample of a solution that is 0.11 M in NaCN.

Explain why mixing of a D_4h component in with a T_d ground state lowers the magnetic moment in nickel(II) complexes.

I need some practice questions for Stoichiometry. The software my class uses for reviewing is mediocre at best. HELP! please lol

What is the molar concentration of Na⁺ ions in 0.015 M solutions of the following sodium salts in water?

(a) NaBr

(b) Na₂SO₄

(c) Na₃PO₄

How do you calculate the molarity of 40 mL of 0.1M acetic acid (HC2H3O2) solution if 12.76 mL 0.35 NaOH was added to reach the equivalence point?

Calculate the [Ag⁺] in a solution prepared by dissolving 1.00g of AgNO₃ and 10.0g KCN in enough water to make a 1.00 L of solution Kf[Ag(CN)₂]^1-=1.0 x 10²¹

Answer: [Ag⁺] = 2.9 x 10^-22M