chp 9 question below

Question

How many moles of solute are in the following solutions?

1.40 LL of 0.26 MM NaOHNaOH

Express your answer using two significant figures.

Answer 1

0.26M means there are 0.26 moles of NaOH per liter of solution. You have 1.40 L of solution. That means there are (0.26)(1.40) = 0.364 moles of NaOH in your solution. Rounding to 2 sig figs give 0.36 moles of the solute NaOH.