One mole of 12C atoms balls have a mass of 12.000 g. Calculate the mass of one 12C atom

How much energy is made when a pice of wood burns. how do you know

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space