Answer: There are 0.25 moles of NaOH in a sample that weighed 10g. Explanation: Given: Mass of NaOH = 10 g Molar mass of NaOH is 40 g/mol. Number of moles is the mass of substance divided by its molar mass. Therefore, moles of NaOH are calculated as follows. [tex]No. of moles = \frac{mass}{molarmass}\\= \frac{10g}{40 g/mol}\\= 0.25 mol[/tex] Thus, we can conclude that there are 0.25 moles of NaOH in a sample that weighed 10g. Log in to Reply

Answer: There are 0.25 moles of NaOH in a sample that weighed 10g.Explanation:Given:Mass of NaOH = 10 gMolar mass of NaOH is 40 g/mol.

Number of moles is the mass of substance divided by its molar mass.

Therefore, moles of NaOH are calculated as follows.[tex]No. of moles = \frac{mass}{molarmass}\\= \frac{10g}{40 g/mol}\\= 0.25 mol[/tex]

Thus, we can conclude that

there are 0.25 moles of NaOH in a sample that weighed 10g.