Question

If 75.00 mL of 5.00 x 10^-3 M K2Cr2O7(aq) is mixed with 25.00 mL of 2.50 x 10^-3 M K2Cr2O7(aq), what is the molarity of the final solution?
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Answer 1

Answer:

Answer:

Well, by definition,

molarity

=

moles of solute

volume of solution

Explanation:

Now the

moles of solute

are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations

molality

is used in preference, which is defined by the quotient....

molality

=

moles of solute

kilograms of solvent

....this is temperature independent, and at lower concentrations,

molarity

≡

molality