How many atoms of hydrogen are there in 3.0kg of ethane

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Modern weaponry has increased the number of deaths in wars and violent conflicts.