oxidizing and reducing agents

2. In the following reaction, identify the oxidizing and reducing agents. Cd + NiO2 + 2H2O  Cd(OH)2 + Ni(OH)2 a. Cd+2 is the reducing agent, NiO2 is the oxidizing agent b. Cd is the reducing agent, H2O is the oxidizing agent c. Cd is the reducing agent, NiO2 is the oxidizing agent d. Cd is th ...continues

Ionization and reactions of acids and bases

1. Write equations for the following: A. Ionization of the strong acid, HBr in water B. Ionization of the weak acid, HNO2 in water. C. Reaction of the weak base (CH3)2NH with water. D. Reaction of the acid, HNO3 with CaCO3 solid. E. Reaction of HCl(aq) with KOH(aq)

Determine the acidity of solutions

Which is more acidic, a solution with a pH = 4.74 or a solution that has [H+] of 8.6x10-5M? Show how you arrive at your answer.

Water supply samples suitable for drinking

3. The National Drinking Water standard for lead in water is no more than 0.015ppm. If a particular water supply sample has 7.2x10-7 moles of Pb per 5.0 liters, is it suitable for drinking?

Gas pressure

4. If a gas occupies 625mL at 0oC and 760 torr pressure, what will its volume be at 273oC and 1520 torr pressure?

Pressure

5. A metal tank of volume 75.5L will burst if the pressure in it exceeds 75.0atm. Will this pressure be exceeded by 82.0 moles of a gas in it at 25oC?

Oxygen production

The following reaction is used in laboratories to produce oxygen: 2 KClO3 --> 2 KCl + 3 O2 At 25 degrees Celsius and one atmosphere pressure, how many liters of O2 gas will be produced from the reaction of 275g of KClO3?

ppm of ozone in air

If the volume fraction of ozone in the air of a city is 6x10-7, what is the ppm of ozone in the air?

products of radioactive decays

What are the products of the following radioactive decays?

Help with lab equation regarding atomic mass

Initial temp. of 100 gm of Fe: 20 degrees Celsius Final temp. of 100 gm of Fe : 100 degrees Celsius Initial temp. of 250 ml of water: 20 degrees Celsius Final temp. of 250 ml of water: 25 degrees Celsius 1. Find the estimate of the specific heat for the metal. (use 1 cal/gm *C for water) 2.Estimate the atomic weight ...continues