Use the molar masses to show that mass was conserved in the reaction.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

the cold front replaces the warmer air at the ground level changing the wind to be breezy and denser.there is also an immediate drop in the temperature.

level 4 to level 2 : ))