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

3. Recall the steel phase diagram where ferrite iron had a max C solid solubility of 0.022 wt% Cbut austenite could take up to 2.14 wt% C! The carbon solubility in iron varies dramatically
between the different phases. Explain why demonstrating with a calculation (hint: austenite isFCC whereas ferrite is BCC

Given: 50 ml of 0.2 M weak acid is titrated with 0.2M NaOH. The pka of the acid is 4.7

1. What is the pH at the equivalence point?

2. What is the ph when 60ml of NaOH is added? (Total Amt of NaOH is 60ml)

3. What is the pH when 10ml of NaOH is added?

4. What would be the approximate ph of a 0.1 M NaCl solution?

1. The carboxylic acid group of an amino acid has a pKa of approximately 2. However, carboxylic acids like benzoic acid and acetic acid have pKas in the range of 4-5 pKa units. Explain why the carboxylic acid of an amino acid is more acidic.

2. Consider the amino acid arginine: a. At physiological pH (pH = 7.4), what is the predominant form in solution? b. What percent of the carboxylic acid group is ionized at this pH? c. What percent of the amino group is ionized at this pH?

For a magnesium fluoride, MgF2, Ksp= 6.4x10^-9, calculate the molar solubility in pure water.

Calculate the molar solubility in 0.050 M NaF solution.

Please show step by step instructions, thank you!