how does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? 1) 1 mol of oxygen has fewer molecules.2) 1 mol of oxygen has more molecules.3) each sample has the same number of molecules.4) the molecules cannot be compared without knowing the 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

The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years