Question

Calculate the molar concentration of HNO, (63.0 g/mol) in a solution that has a specific gravity of 1.42 and is 70.5% HNO, (w/w).

Answer 1

The 3 must be missing from your keyboard. That's HNO3 for nitric acid.
1.42 g/mL x 1000 mL x 0.705 x (1/63) = ? molarity.
To break this down goes this way.
1.42 g/mL x 1000 mL = mass of H2O and HNO3 in 1000 mL of solution.
That x 0.705 = mass of the HNO3. The rest of it is H2O
(1/63) convert mass HNO3 to mols HNO3.
That is in 1 L solution and mols/L is molarity.

Answer 2

Describe the preparation of 100 HL of 6.0 M HCL from a concentrated solu-tion that has a specific gravity of 1.18 and is 37% (w/w) HCl (36.5 g/mol).

Answer 3

See above.

Answer 4

تحليلية

Answer 5

A 2 g of CrCl3 (158g/mol) and a 2 g of CaCl2 (111g/mol) was dissolved and treated with excess AgNO3 (170 g/mol), calculate the mass of AgCl (143g/mol) precipitate formed