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A chemist adds of a M aluminum sulfate solution to a reaction flask. Calculate the millimoles of aluminum sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

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User Atombit
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1 Answer

7 votes

Answer: The question is incomplete without values, but here is a similar questions that has values ; A chemist adds 85.0mL of a 0.125 mol/L aluminum sulfate (Al2(S04)solution to a reaction flask . Calculate the millimoles of aluminum sulfate the chemist has added to the flask . Be sure your answer has the correct number of significant digits mmol.

Number of moles = 10.625millimoles or 1.06 x 10 millimoles.

Step-by-step explanation :

From number of moles = concentration (mol/L) x volume (L)

Concentration = 0.125mol/L, Volume = 85.0mL ( Convert to L) = 85/1000 = 0.085L

Substitute in the equation = 0.125mol/L x 0.085L = 0.010625moles

But 1mole is equivalent to 1000millimoles

convert the 0.010625moles to millimoles = 0.010625moles x 1000millimoles/1mole

Number of moles = 10.625millimoles or 1.06 x 10 millimoles.

answered
User Patrina
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