The mass of gas A is 11.56. i got this answer by 0.68 multiplied by 17. because in this problem the key word is times.
i think the answer is B. They have low reactivity.Hope this helped (:
This is a hard question because BEING BOLD cant be light ya know... but the light bulb.. thomas edison and joseph swan
In comparison see it is very easy in goolge
A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded.
