Question

Calculate the mass of 3.4 moles of nitdoc acid (HNO3). explain the process or show your work by including all values used to determine the answer.

Answer 1

3.4*(1+14+16*3)= 214.2 g of hno3

Answer 2

The mass of nitric acid is 214.2 g.

Explanation:

Number of moles = Mass of the substance/ Molar Mass of the substance

Therefore, the mass of the substance = Number of Moles x Molar Mass of the substance

The given substance is Nitric acid $HNO_3$

Molar Mass of Nitric acid = Molar Mass of ( 1H + 1N + 3O) = 1 + 14 $+ (16\times 3)$

= 15 + 48 = 63 g/mol

And number of moles = 3.4

So, the mass of the substance = 3.4 x 63 = 214.2 g