How many butane molecules are present in a sample that contains 5.0 moles of butane? (Butane- C4H10)

Question

What would be the mass of 75 moles of butane?

Answer 1

1 mol of anything (butane for example) contains 6.02 x 10^23 anythings(molecules of butane for example).

1 mol of butane is the molar mass of butane in grams.

Answer 2

2C4H10 (g) + 13O2 (g) → 8CO2 (g) + 10H2O (g)