Boric acid, H_3 BO_3 is a mild antiseptic and is often used as an eye wash. A sample contains 0.543 mol H_3 BO_3. What is the mass of boric acid in the sample?.

Boric acid, H_3 BO_3 is a mild antiseptic and is often used as an eye

1.	Boric acid, H_3 BO_3 is a mild antiseptic and is often used as an eye wash. A sample contains 0.543 mol H_3 BO_3. What is the mass of boric acid in the sample?.
Answer» SOLUTION :Molecular mass of `H_(3)BO_(3)=(1xx3)+(Hxx1)+(16xx3)` = 62 Boric acid SAMPLE contains 0.543 mole. Mass of 0.543 mole of Boric acid = Molecular mass `XX` mole = `62xx0.543` = 33.66 G