Your mommy buys you a helium balloon at the circus. It has a volume of 2.95 liters. What is the mass of helium, in grams, contained in the balloon?

if my calculation are correct, it's 295 grams

Explanation:

because liters converted to grams is .1=100 so if you take 2.95 times 100, it equals 295

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the dissolution of polymer can be thermodynamically described in 2 steps.