a mixture of 73.0 g NH₃ and 73.0 g HCl are made to react at stp according to the equation

NH₃ + HCl --> NH₄Cl

What is the volume of gas remaining and what gas is it?

solution               mL H2O2                    mL KI                 rate (mL O2/s)

1                          5.0                             10.0                          ?

2                          10.0                           10.0                          ?

3                           5.0                              20.0                        ?

Rate Law: since doubling either [H2O2] or [I-] doubles the reaction rate, what is the rate law?

What is the overall lifetime, in seconds, of hydroperoxy radicals in the polluted troposphere where [O₃] is 100 ppb and [NO] is 20 ppb? Repeat the calculation for the clean troposphere where [O₃] is 30 ppb and [NO] is 0.002 ppb. Use the following reactions and rate constants.

            HO₂ + NO → NO₂ + OH                   k = 8.1x10^-12 cm³ s^-1

HO₂ + O₃ → 2O₂ + OH                     k = 7.3x10^-14 exp(-1275/T) cm³ s^-1

The amino acid leucine has two titratable groups, the α-amino, pKa 9.6 and the α-carboxyl, pKa 2.4. Calculate the ratio of acidic and basic forms and express them as [A]/[HA] ratio or [B]/[BH] of the titrating group at the following pH values: α-carboxyl @ 1.4, 1.9, 2.4, 2.9, 3.4; α-amino @ 8.1, 8.6, 9.1, 9.6, 10.1. Plot pH vs. [B]/[BH] for each group, on the same graph. Compare similarities or disparities in the titration of each group.

Calculate the percent dissociation of 0.40 M benzoic acid, C6H5COOH. (Ka = 6.3 x 10^-5)

___%?

An aqueous solution containing 10g of an optically pure compound was diluted to 500 mL with water and was found to have a specific rotation of -133 degrees. If this solution were mixed with 500mL of a solution containing 6g of a racemic mixture of the compound, what would the specific rotation of the resulting mixture of the compound? What would be its optical purity?

nicotine is resposible for the addictive properties of tabacoo assume Kb1= 1.05x10^-2 and Kb2= 1.32x10^-11. Determine the pH of a 0.00125M solution

Draw all the atoms in a trans peptide linkage from C alpha of one amino acid to C alpha of the next amino acid (do NOT include atoms of the side chains) and indicate possible resonance structures.

Use the following pair of reduction half-reactions to design a galvanic cell. Then write in the proper coefficient for each of the species involved in the overall reaction. Water molecules and protons are not shown in the half-reactions, but may be needed in the overall reaction.

MnO4- (aq) ? MnO2 (s) ?o = 0.59 V NO3- (aq) ? NO (g) ?o = 0.96 V

NO₃^- (aq)
MnO₄^- (aq)
NO (g)
MnO₂ (s)
H⁺ (aq)
H₂O (l)

Describe the general function of each of the following types of steroid hormones:

Estrogens

Androgens

Progestins

Mineralocorticoids

N-Bottle Lab

Determine the correct identity of thirteen (14) cations and six (6) anions in fourteen (14) different bottles using flame tests, acid-base properties, solubility rules, formation of complex ions, and types of chemical reactions (i.e. formation of a solid, or a gas-formation reaction).

. Each solution will contain one (1) cation and one (1) anion. The cations that could be present in a solution are H⁺¹, Na⁺¹, K⁺¹, NH₄⁺¹, Ag⁺¹, Ba⁺², Cu⁺², Ni⁺², Sr⁺², Co⁺², Zn⁺², Al⁺³,Ca²⁺and Fe⁺³. The anions that could be present are NO₃^-1, OH^-1, SCN^-1, Cl-SO₄^-2, and CO₃^-2.

I need to know the fastest and easiest way to test for all of these without having to repeat many steps over and over again. Could you please list for each anion and cation what is the best and sure way to determine each by listing what color the litmus paper will be, color of precipitate or no precipitate, smell, and so on. This is worth a huge portion of my grade and needs to be done perfectly. It is 8 AM now and I need to leave for lab at 2 PM so I have time and the more data the better! Honestly, I would give up all of my remaining 18 questions to have this done perfectly! Thank you so very much!

sketch the general appearance of the curve for the titration of weak diprotic acid with NaOH. what chemistry governs the pH in each distinct region of the curve

Balance the following skeleton reaction and identify the oxidizing and reducing agents: H2S(g) +NO3-(aq) --> S8(s) + NO(g) [acidic].

Include the states for each reactant and product in the balanced chemical equation. Do not include the states when identifying the oxidizing and reducing agents.