Calculate the density in g/ml of 2.0 l of gasoline that weighs 1.29 kg . how would i do this?

Gymnast always perform on padded mats. how does the mats protect the gymnast

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

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure