Thermal energy had a direct effect on:
a. states (phases) of matter
b. mass
c. elastic potential energy
d. gravitational potential energy

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.

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

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of