# If I have 7.0 x 10^24 formula units of magnesium chloride, how many grams of chlorine would I have?

1 answer

###### Question:

If I have 7.0 x 10^24 formula units of magnesium chloride, how many grams of chlorine would I have?

## Answers

Answer:824 gExplanation:First we convert 7.0 x 10²⁴ formula units of magnesium chloride (MgCl₂) into moles, using Avogadro's number:7.0 x 10²⁴ formula units ÷ 6.023x10²³ formula units/mol = 11.62 mol MgCl₂There are two Cl moles per MgCl₂ moles, meaning that we have (2 * 11.62) 23.24 moles of ClFinally we convert 23.24 moles of chlorine into grams, using chlorine's molar mass:23.24 mol * 35.45 g/mol = 824 g

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