ataz

I NEED HELP WITH MY CHEMISTRY HOMEWORK...only SERIOUS answers please?

Posted:: 3+ months ago by ataz
Topics:: concentration, chemistry, homework, acid, present, solution, mole, answer

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Calculate the moles of hydrochloric acid present in 250.0mL of a solution which has a concentration of 0.100 mol/L

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Answers (1)

kangaroo

Okay, you are given the concentration for a litre. In a litre, there are 0.1 moles of HCl. Then it asks you how many moles are in a quarter of a litre (250ml). Well, you know how many are in a litre, so it's a quarter of that. A quarter of 0.1 moles = 0.025 moles.

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ataz

Thank u so much, I had the same answer, just confused myself. Thanks a lot!!

kangaroo

Hehe, you're welcome. I used to do the same thing. It's nice to have someone confirm you were right!

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