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jrfranckowiak
20.03.2020 •
Chemistry
For the reaction 2 HCl + Ca ( OH ) 2 ⟶ CaCl 2 + 2 H 2 O how many grams of calcium hydroxide, Ca(OH)2, are needed to react completely with 57.7 g of hydrochloric acid, HCl?
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Ответ:
58.53 g of
is need to react completely with 57.7 g of HCl.
Explanation:
Mass of HCl = 57.7g
Molecular mass of HCl= 36.46g/mol
Mass mass of
= 74.09g/mol
Calculationg mass of HCl,
As per the given equation,
1.58 moles![HCl](/tpl/images/0554/9885/5ec2e.png)
mol ![Ca(OH)_{2}](/tpl/images/0554/9885/2ae58.png)
Now, calculating mass of
from the above calculated moles,
mass of![Ca(OH)_{2}](/tpl/images/0554/9885/2ae58.png)
![= 0.79mol\times 74.09g/mol](/tpl/images/0554/9885/df421.png)
mass of![Ca(OH)_{2}](/tpl/images/0554/9885/2ae58.png)
.
Ответ:
True
Explanation:
Evidence demonstrates that as a person consumes more alcohol on a single occasion, their abilities and inhibitions deteriorate while hazardous behavior rises, increasing the likelihood of harm during or shortly after the event.
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