What mass of Na2SO4 is needed to make 2.5 L of 2.0 M solution [Solved]

Molar mass Na2SO4 = 142 g per mol.
142 g in 1L is 1.0M,
142 * 2 g in 1L = 2.0M,
142 2 2.5 g in 2.5 L is 2.0M.
142 2 2.5 = 710.
The right reply is D. 710 g.

The molar mass of sodium sulfate is(rounded off): 142 g/mole. A 1 M resolution will probably be 142 g/liter of resolution; a 2M resolution will be284 g/liter of resolution; 2.5 liters of resolution will requires 2.5 X 284 grams or 710 grams

Molar mass Na2SO4 = 142 g per mol.
142 g in 1L is 1.0M,
142 * 2 g in 1L = 2.0M,
142 2 2.5 g in 2.5 L is 2.0M.
142 2 2.5 = 710.
The right reply is D. 710 g.

This post is last updated on hrtanswers.com at Date : 1st of September – 2022

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