Which of the following is a method of purifying water?
a. adding iodine
b. aeration
c. freezing
d. fixation

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Glucose (c6h12o6) is an important biological molecule. (round the answer to nearest hundredth.) what is the percent by mass of carbon in glucose?