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Topic: Stoichiometry question  (Read 1663 times)

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Offline KH502

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Stoichiometry question
« on: April 28, 2015, 07:58:06 AM »
Question:

2.24 × 10^–2 dm3 of H2 was evolved (formed) when 24 mg of a bivalent metal X reacted
with an access of HCl. X was:
A. Ca
B. Sr
C. K
D. Fe
E. Mg

Is there another way to solve this without having to test randomly every element?

Thanks.

Offline Borek

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Re: Stoichiometry question
« Reply #1 on: April 28, 2015, 07:59:52 AM »
Sure - reverse the process to estimate molar mass of the element involved.
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline KH502

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Re: Stoichiometry question
« Reply #2 on: April 29, 2015, 06:24:47 AM »
Thanks! That makes sense ;D

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