A chemist prepares a solution of aluminum sulfite by measuring out 109 umol of aluminum sulfite into a 350 mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in mmol/L of the chemist's aluminum sulfite solution. Be sure your answer has the correct number of significant digits.

Question

Chemistry

Buffy

10 March, 22:35

A chemist prepares a solution of aluminum sulfite by measuring out 109 umol of aluminum sulfite into a 350 mL volumetric flask and filling the flask to the mark with water.

Calculate the concentration in mmol/L of the chemist's aluminum sulfite solution. Be sure your answer has the correct number of significant digits.

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Answers (1)

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Marc Grimes · Answer 1

0.311 mmol/L

Explanation:

109 μmol = 109*10^ (-6) mol

109*10^ (-6) mol = 109*10^ (-6) mol * (10^3 mmol/1mol) = 109*10^ (-3) mmol =

=0.109 mmol

350 mL = 0.350 L

0.109 mmol/0.350 L = 0.311 mmol/L