1. When 0.4 g of impure zinc reacted with an excess of hydrochloric acid, 132 mL of hydrogen was collected over water at 10◦C. The external pressure was 786.6 Torr. What volume
would the dry hydrogen occupy at 1 atm and
298 K?

Answer in Liters

2. What amount of H2 was collected?
Answer in units of mol.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.