Dalton theorized that atoms are indivisible and that all atoms of an element are identical. scientists now know that a. dalton’s theories are completely correct. b. atoms of an element can have different numbers of protons. c. atoms are all divisible. d. all atoms of an element are not identical but they all have the same mass.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

How are isotopes of the same chemical element alike? how are they different?

What is the molar mass of ca(cio4)2