The answer is all of them. But in a school situation, A would be appropriate. This is because the smoke gets into the smokers lungs, whether it be marijuana or tobacco, and can cause cancer cells to grow in your lungs and enter your bloodstream.
So A is the answer.
The moon, man has not been to mars yet
9.96*10⁻²² is the answer, First you find the molar mass of gold, then you turn atoms to moles then moles to grams. There you go you're done!<span />
198.12 g of ammonium sulfate are required to make 0.25 L of a solution with a concentration of 6M.
Explanation:
I'll give you a real answer later need points for test questions sorry