Question

Borax, continued:

An aqueous solution of Borax (Na2B4O7) is sometimes used to fireproof wood. 

How many moles of Na2B4O7 are in 600.0 ml of a 1.57 M Na2B4O7 solution? 

Answer 1

Volume of solution = 600 mL

Molarity = 1.57

$Molarity = \frac{mole}{volume}\times 1000$

$1.57 = \frac{mole}{600}\times 1000$

mole= 0.942