If an object is 12 meters off the ground and has a mass of 600 kg , what is it’s potential energy

How many grams of n2h4 will be consumed by 23 g of n2o4

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Find the mass, in grams, of 5.00*10^23 molecules of f2