How many hydrogen molecules are there in 1 ton of hydrogen? (Hint: How many grams are there in 1 ton?) YOU MUST SHOW ALL OF THE STEPS AND YOU MUST DO THE PROBLEM JUST AS ILLUSTRATED. INCLUDE UNITS!

The reaction q+r2=r2q is found to be first order in r2 and

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will