Question

What is the molar mass of Na2B4O7.10H2O

Answer 1

Borax/Molar mass

381.37 g/mol

Formula: Na2[B4O5(OH)4]·8H2O

Density: 1.73 g/cm³

Answer 2

Answer:

382 g

Explanation:

$Na_{2} = 23*2=46\\ B_{4} = 11*4 = 44\\O_{7}= 16 * 7= 112\\\\Since \\ H_{2}O = 16 + 2 = 18\\\\10(H_{2}O) = 10*18 = 180\\\\Therefore,\ Total \ Mass = 180 + 112 +46+44 = 382g$