How many moles of sodium hydroxide, NaOH, are in a 35.65 g sample of NaOH? (The molar mass of NaOH is 40.01 g/mol.)

0.8910 mols of NaOH in a 35.65 g sample of NaOH

Explanation:

Mass off NaOH = 39.997

given = 35.65 g of NaOH

35.65 g of NaOH * 1 mol NaOH = 0.8910, since there are 4 sig figs.

                                /40.01 g

it should be p1 v1 = p2 v2

gravity causes stares to cluster i think so