4. If a gas is held at constant pressure and is heated, which of the following would occur?
A. The gas expands proportionally to the increase in temperature.
B. The gas contracts proportionally to the increase in temperature
C. The gas volume is a constant because pressure is
constant
D. None of the above.

5. The volume of a gas at constant pressure is independent of
temperature
A. True
B. False

6. Air will expand about the same amount as propane with the same change in temperature over ordinary temperature ranges.
A. True
B. False

8. Review your graphs for the four gases. How do you explain the
odd gas?
A. It was caused by an error in the apparatus.
B. It had a chemical reaction at around 20'C.
C. It has a boiling point around 35°C.
Please help

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

What is the solubility of substance?

Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml