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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Melanie Cooke on May 13, 2015, 04:48:22 PM

Title: Stoichimetry
Post by: Melanie Cooke on May 13, 2015, 04:48:22 PM

A puzzle I'm working on

CaH2 + 2H2O = 2H2 + Ca(OH)2

What volume of hydrogen is produced from 250.25 g of calcium hydrite?

Ive started by finding molar masses:
42 + 36 = 4 + 74

Dont know what to do next. 

Title: Re: Stoichimetry
Post by: Borek on May 13, 2015, 06:04:00 PM

Hydride, not hydrite.

How many moles of hydride do you have? How many moles of hydrogen produced per each mole of hydride?

Title: Re: Stoichimetry
Post by: billnotgatez on May 14, 2015, 10:38:27 AM

@Melanie Cooke
By the way your formula could have been written using the editing functions when posting

CaH₂ + 2H₂O  :rarrow: 2H₂ + Ca(OH)₂

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