How many moles of oxygen gas are needed to make 12.7 moles of water?​

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

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

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas