how many moles of water vapors are formed when 10L of butane gas is burned in oxygen at STP?

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

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?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat