General Chem I Chapter 3 HW

Question

One mole of methane gas, CH₄, has how many particles of methane? (Use three significant figures.)

_________ particles CH4

3.75 moles of ammonia has how many particles of ammonia?

__________

Answer 1

1 mole CH₄ x 6.022x10²³ particles / mole = 6.02x10²³ particles (3 sig. figs.)

3.75 mol NH₃ x 6.022x10²³ particles / mole = 2.26x10²⁴ particles (3 sig. figs.)