Question

Calculate the no of molecules of sulphuric acid in 1mL if its of 1.84 specific gravity?

Answer 1

Answer:

• 1.1306×10^22 molecules

Explanation:

To compute for the number of molecules of sulfuric acid in one mL we must convert it first to number of grams. Since the specific gravity is given to be 1.84, one mL of the acid has a mass of 1.84 grams.

After knowing the mass in grams we must convert it to number of moles. One mole of sulfuric acid has a mass of H = 2 * 1 g; S= 32 g; and O = 4 * 16 = 64 g. There collective mass = (2 g + 32 g + 64 g) = 98 g.

The number of moles of 1.84 g is 1.84 g / 98 g per mole. Therefore 1.84 g is 0.01878 moles.

After knowing the number of moles we multiply this result by 6.02 x 10^23 molecules. The result shows that it has 1.1306×10²² molecules.