Question

a cylinder of bottled gas contains 47 kg of propane, C3H8. how many propane molecules does it contain

Answer 1

a cylinder of bottled gas contains 47 kg of propane, C3H8. how many propane molecules does it contain

$$\nu (C3H8) = \frac{47 \times 10^3}{44} = 1.07 \times 10^3 \text{ mol}$$ $$N = 1.07 \times 10^3 \times 6.02 \times 10^{23} = 6.4414 \times 10^{26}$$