A chemist requires 3.0 liters of 0.12 M H2SO4 solution. How many grams of H. SO4 should the chemist dissolve in the water ?

Mass of H₂SO₄ = 35.31 g

Explanation:

Given data:

Volume of H₂SO₄ solution = 3.0 L

Molarity of solution = 0.12 M

Mass of H₂SO₄ = ?

Solution:

Formula:

Molarity = number of moles / volume of solution in L

Now we will put the values.

0.12 M = number of moles / 3.0 L

Number of moles = 0.12 M  × 3.0 L

Number of moles = 0.36 mol  ( M = mol/L)

Mass of H₂SO₄:

Mass of H₂SO₄ = number of moles × molar mass

Mass of H₂SO₄ = 0.36 mol  × 98.079 g/mol

Mass of H₂SO₄ = 35.31 g

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements