In each situation below, we are adding aqueous solutions of HNO3 to NH3, and the calculating the PH of solution formed. (For ammonia Kb=1.8x10^-5)

a)Write the reaction that describes what happens when HNO3 is added to NH3. Do not include spectator ions.

b)What is the pH if 52.0mL of 0.120 M HNO3 added to 50.0mL of 0.120 M NH3?

c)What is the pH if 50.0mL of 0.120 M HNO3 added to 50.0mL of 0.120 M NH3?

Could you please explain each step rather than simply giving me the answer, I am trying to understand the concepts.

You have a solution that contains 25 g of an unknown non-ionizing polymer in a 250 mL solution of chloroform (CHCl3 ). The osmotic pressure of this solution at 25 ◦C is found to be 0.056 atm. What is the molecular weight of the unknown solid?

Choose a False statement:

The weak acid HZ has a Ka of 2.55 x 10-4. Calculate the pH of a 0.235 M solution.

A 6.00-L sample of C 2 H 4 (g) at 2.00 atm and 293 K is burned in 6.00 L of oxygen
gas at the same temperature and pressure to form carbon dioxide and liquid water.
If the reaction goes to completion, what is the final volume of all gases at 2.00 atm
and 293 K?

Solid carbon can react with gaseous water to form carbon monoxide gas and hydrogen gas. The equilibrium constant for the reaction at 700.0 K is K p =1.60× 10 −3 . If a 1.55- L reaction vessel initially contains 157 torr of water at 700.0 K in contact with excess solid carbon, find the percent by mass of hydrogen gas of the gaseous reaction mixture at equilibrium.

1. Calculate the change in total internal energy for a system that releases 2.38 × 10⁴ kJ of heat and does 6.80 × 10⁴ kJ of work on the surroundings. Enter your answer in scientific notation.

2. In a gas expansion, 69 J of heat is absorbed by the system, and the energy of the system decreases by 114 J.

Calculate the work done.

3. Be sure to answer all parts. Given the thermochemical equation for photosynthesis, 6H₂O(l) + 6CO₂(g) →C₆H₁₂O₆(s) + 6O₂(g) . ΔH = +2803 kJ/mol. Calculate the solar energy required to produce 8503 g of C₆H₁₂O₆.

4. In a constant-pressure calorimetry experiment, a reaction gives off 23.8 kJ of heat. The calorimeter contains 150 g of water, initially at 25.4 c. What is the final temperature of the water? The heat capacity of the calorimeter is negligibly small.

5. A piece of silver with a mass 4.10 ×10² g has a heat capacity of 97.2 J/° C. What is the specific heat of silver?

The density of a gaseous compound is 2.06 g/L at STP. What is the most likely formula of this gas?

Ionization engergy of Na: 496 kj/mol

Electron Affinity of F: 328 kJ/mol

Energy to vaporize Na: 108 kJ/mol

F2 bond energy: 160 kJ/mol

Energy Change for the reaction:

Na (s) + 1/2F2 (g) = NaF (s) ; DeltaH = -575K

Photons are the force carriers and source of electromagnetic interactions between electrons and protons. How are electromagnetic interactions described by wave mechanics? (i.e. Schrodinger's equation, the Hamiltonian operator, the Born probability density function, etc).

list the steps for balancing a nuclear reaction

what is the handbook value of concentration of calcium carbonate in hot water

How is SDS-PAGE technique different from cellulose acetate electrophoresis?

explain how the cathode rays may be obtained

A typical person has an average heart rate of 68.0 beats/min. Calculate the given questions. How many beats does she have in 4.0 years? How many beats in 4.00 years? And finally, how many beats in 4.000 years? Pay close attention to significant figures in this question.

4.0 years:_____beats

4.00 years:_____beats

4.000 years:_____beats