Given the balanced equation above, how many moles of C would be required to react with 4.5 moles of H2?

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.

idk what is it? is this a question that you know the answer or u dont

ok whats the question if not i cannot you i need question and need a thing to answer