Answer:
0.0387 moles SF₆
Step-by-step explanation:
To find the moles of sulfur hexafluoride (SF₆), you need to multiply the number of molecules by Avogadro's number. Avogadro's number is a ratio between molecules and moles. It is important to arrange the conversion in a way that allows for the cancellation of units (the desired unit should be in the numerator). The final answer should have 3 sig figs to match the sig figs of the given value (2.33 x 10²²).
Avogadro's Number:
6.022 x 10²³ molecules = 1 mole
2.33 x 10²² molecules SF₆ 1 mole
--------------------------------------- x ------------------------------------ = 0.0387 moles SF₆
6.022 x 10²³ molecules