1) Two flexible containers for gasses are the same temperature and pressure. One holds .50 grams hydrgen and the other 8.0 grams of oxygen. Which of the following statements regarding these gas samples is false?
b) the number of molecules in the hydrogen container is the same as the number of molecules in the oxygen container
c) the density of the hydrogen sample is less than that of the oxygen sample
d) the average kinetic energy of the hydrogen molecules is the same as the average kinetic energy of the oxygen molecules
e) the average speed of the hydrogen molecules is the same as the average speed of the oxygen molecules
2) Pi bonding occurs in each the following species except
3) The reaction of silver metal and dilute nitric acid proceeds according to the equation above. If 0.10 mole of powdered silver is added to 10 ml of 6.0 molar nitric acid, the number of moles of NO gas that can be formed is?
3Ag(s) + 4HNOsub3 -->/<---- 3AgNOsub3 + NO(g) + 2 Hsub2O
1) The answer is (e) because avarage speed of hydrogen is greater than the avarage speed of oxygen.
The answers are given with short explanations.