Asample of sodium hydroxide (naoh) has a mass of 160.0 g. the molar mass of naoh is 40.00 g/mol. how many moles of naoh does this sample contain?

4.00 moles.

Explanation:

The formula to calculate moles of any substance is:

molar mass is the sum of atomic masses of each element present in the compound.

We are given that the compound is NaOH.

The molar mass if 40.00 g/mol.

mass of NaOH = 160.0g

putting values in the formula:

moles of NaOH =4.00 mol

answer

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