if there are 20g of methane, 64g of Oxygen gas and 44g of carbon dioxide in this combustion reaction. How many grams of water were produce?

In which phase(s) do the molecules take the shape of the container?

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?

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!