1. Why did the student's measurement turn out to be so costly? 2. What should he have done differently ?

What is the relation between concentration of reactants and the rate of chemical reaction?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag