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24-03-2021
Chemistry

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How would you prepare a 1 L solution of 3 M MgO?

How would you prepare a 1 L solution of 3 M MgO class=

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24-03-2021

Answer: 175.35g

Explanation: A 3 M solution has 3 moles of solute per litre.

The mass of one mole of NaCl equals the MW of NaCl MW = 35.45 + 23 =58.45 g/mol

The mass of 3 moles is 58.45 g/mol ×3 mol=175.35 g NaCl or 200 g rounded to one sigfig.

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