## How many grams are there in 1.8055 x 10^25 molecules of sodium sulfate? Hint: Convert to moles first

Question

How many grams are there in 1.8055 x 10^25 molecules of sodium sulfate? Hint: Convert to moles first

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6 months 2021-08-25T11:29:52+00:00 1 Answers 1 views 0

4258.82 g of Na₂SO₄

Explanation:

From the question given above, the following data were obtained;

Number of molecules of Na₂SO₄ = 1.8055×10²⁵ molecules.

Number of mole of Na₂SO₄ =?

6.02×10²³ molecules = 1 mole

Therefore,

6.02×10²³ molecules = 1 mole of Na₂SO₄

Next, we shall determine the mass of 1 mole of Na₂SO₄. This can be obtained as follow:

1 mole of Na₂SO₄ = (23×2) + 32 + (16×4)

= 46 + 32 + 64

= 142 g

Thus,

6.02×10²³ molecules = 142 g of Na₂SO₄

Finally, we shall determine the mass of Na₂SO₄ that contains 1.8055×10²⁵ molecules. This can be obtained as follow:

6.02×10²³ molecules = 142 g of Na₂SO₄

Therefore,

1.8055×10²⁵ molecules

= (1.8055×10²⁵ × 142) / 6.02×10²³

= 4258.82 g of Na₂SO₄

Thus, 4258.82 g of Na₂SO₄ contains 1.8055×10²⁵ molecules