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Bhargav Kumar R · Answer 1 · 2019-11-22T00:35:53+0000

we are asked to find the mass of 0.250 mol of NaOH
molar mass of NaOH - 40 g/mol
in other words 1 mol of NaOH has a mass of 40 g
therefore 0.250 mol of NaOH has a mass of - 40 g/mol x 0.250 mol = 10.0 g
mass of 0.250 mol of NaOH is 10.0 g

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