A sample contains 1,388 g C, 0.345 g H, 1.850 g 0, and has a molar mass of 62 g/mol. Determine the sample's empirical formula and molecular formula.

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa