Walt made a study chart listing uses for two types of electromagnetic waves. which heading best describes the chart?

Which terms are used to identify pure substances

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.)

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.