the molarity of a solution that contains 4.0g of NaOH in a liter of solution is, 0.01, 0.1, 1, or0.4?

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the molarity of a solution that contains 4.0g of NaOH in a liter of solution is, 0.01, 0.1, 1, or0.4?

2006-10-27 13:45:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

The molar mass of NaOH is 40 g, because Na has a molar mass of 23, O is 16, and H is 1. 4.0 g is one tenth of a mole, and molarity is defined by the number of moles of the solute in a liter of solution, so the molarity is 0.1.

2006-10-27 13:47:41 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋

0.1 molar. The molecular weight of NaOH is 23+16+1.

2006-10-27 13:47:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋