A sample of sodium hydroxide NaOH has a mass of 160 point 0 g The molar mass of NaOH is 40 point 0 0 g over mol How many moles of NaOH does this sample contain?

To find the amount in moles, divide the sample’s mass by the molar mass: 160.0 g ÷ 40.00 g/mol = 4.000 mol. The grams cancel, leaving moles, so the sample contains 4.000 moles of NaOH.

AI-written and checked against the verified answer.