True or false: the precision of a calculated answer is limited by the least precise measurement used in the calculation

Avariable that is not being directly tested during an experiment should be

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)