According to the ph scale, what is the approximate ph of acid rain?
a. 4.0
b. 4.5
c. 5.0
d. 5.5

How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate

Which is true about metals used for jewelry, such as platinum and gold? a. they have low flammability. b. they have low reactivity. c. they have high flammability. d. they have high reactivity.

Which of the following is a pure substance? airbloodcopperwood