Question

3) Calculate how many formula units are in 7.11 moles of CaCl2.
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Answer 1

42.82 × 10²³ formula units

Step-by-step explanation:

Given data:

Number of moles of CaCl₂ = 7.11 mol

Number of formula units = ?

Solution:

We will solve this problem by using Avogadro number.

1 mole of substance contain 6.022× 10²³ formula units.

7.11 mol × 6.022× 10²³ formula units / 1mol

42.82 × 10²³ formula units