I'm a bit rusty on some of these subjects:
1. How many grams of Cu metal will be plated out of a Cu(NO3)2 solution by passing a current of 3.00 amperes for 11 minutes?
2.
Given:
H3O+ (aq) + NO2- (aq) -> HNO2 (aq) + H20
Kc= 3.78E3 at T=298k
Calculate Kc for the reaction
NO2- (aq) + H2O (l) -> HNO2 (aq) + OH- (aq)
3. What volume of 0.215 molar sodium hydroxide solution would be required to neutralize completely 41.8 mL of a 0.110 molar sulfuric acid solution?
4. Mixing 50 mL of 0.010 M barium hydroxide(aq) and 150mL of 0.010 M nitric acid(aq) will result in a solution with a pH of ____.
5. A 7.78 g sample of gas occupies 1.25 L at STP. What is the molecular weight of the sample?
6. What is the energy of a photon at wavelength = 6580 A
A. 3.0E-15 ergs
B. 6.6E-27 ergs
C. 8.0E-13 ergs
D. 3.0E-12 ergs
E. 8.7E-24 ergs