Areaction requires 22.4 l of gas at stp. you have 25.0 l of gas at 101.5 kpa and 373 k. which of the following statements is true? (use the ideal gas law: pv = nrt where r = 8.31 l-kpa/mol-k.)
a- you do not have enough gas for the reaction.
b- you will have gas for the reaction.
c- given this information, you cannot tell if you have enough gas for the reaction.
d- you will have excess gas for the reaction.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

How does concentration affect reaction rate