Which of the following is an input for cellular respiration?
a co2
b. h2o
c. sunlight
d. og2

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

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