A gaseous hydrocarbon contains 80% carbon and 20% hydrogen, 1dm3 of the compound at s. t.p weighs 1.35g find the molecular formular (1 mole of any gas at s. t.p occupies 22.4dm3, C=12, H=1)

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

Identify a strong intermolecular force of attraction between an alcohol

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?