A substance has a volume of 20 mL and a density of 2.5 g/mL. What is its mass? (M=DxV)

41

Explanation:

mate u literally just have to substitute the values into ur formula. u would then get 20 times 2.5 which is 41

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

it would be a gas formation