What happens when grapes get fermented

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains