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You prepare 3.00 L of 0.250 M HNO3 from a stock of nitric acid that is 12.0 M. What volume of the stock solution will you require to make the dilute solution? a) 0.0625 mL b) 62.5 L c) 144 L d) 62.5 mL

Answer 1

And the response is d) 62.5 mL.

Given the volume and concentration of your target solution as well as the concentration of your stock solution, you can use the dilution calculation formula to get the following results:

#C_1V_1 = C_2V_2#, where

#C_1# - the concentration of the stock solution; #V_1# - the volume you need to take from the stock solution; #C_2# - the concentration of your target solution; #V_2# - the volume of the target solution.

Plug all your values into the above equation and solve for #V_1#

#V_1 = C_2/C_1 * V_2 = "0.250 M"/"12.0 M" * "3.00 L"#

#V_1 = "0.0625 L"#

The response, given in mililiters, is

#"0.0625 L" * "1000 mL"/"1 L" = "62.5 mL"#

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Answer 2

Xavier Avery

b) 62.5 L

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.