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Sarah measures out 151 grams of SO₂. How many moles is this? Express your answer to three significant figures.

151 grams of SO₂ is equal to ______ moles.

Answer :

Final answer:

To convert grams to moles, use the formula moles = grams / molar mass.


Explanation:

To calculate the number of moles from grams, you need to use the formula:

moles = grams / molar mass

In this case, the molar mass of SO₂ is:

(32.06 g/mol) + (2 x 16.00 g/mol) = 64.06 g/mol

Using the formula and substituting the values, we get:

moles = 151 g / 64.06 g/mol = 2.36 mol

Therefore, 151 grams of SO₂ is equal to approximately 2.36 moles.


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