Oily vegetable or animal substances are _ (choose only one answer) Vitamins
Proteins
Lipids
Carbohydrates

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction

Stoichiometry- i need with 14 and 15! an explanation would be appreciated!