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Nata [24]
3 years ago
6

Chemistry Question, Don't really know how to do it lol.

Chemistry
1 answer:
Scilla [17]3 years ago
3 0

Answer: 17.2 g

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

\text{Moles of} HgS=\frac{20.0 g}{233g/mol}=0.085moles

The balanced chemical equation is:

4HgS(s)+4CaO(s)\rightarrow 4Hg(l)+3CaS(s))+CaSO_4(s)  

According to stoichiometry :  

4 moles of HgS produce =  4 moles of Hg

Thus 0.085 moles of HgS will require=\frac{4}{4}\times 0.085=0.085moles  of Hg

Mass of Hg=moles\times {\text {Molar mass}}=0.085moles\times 200.6g/mol=17.2g

Thus 17.2 g of Hg will be produced form 20.0 g of HgS.

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A full truckload of garbage has a mass of 26370 pounds . What is this mass in kilograms?
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  • The mass in kilograms is (11971.98 Kg)

  • Pounds can be  converted to pounds to kilograms by using this conversation (1 pound = 0.454 kilogram)

<em />

  • <em>Let X= mass of the object in kilograms</em>

  • <em>(1 pound = 0.454 kilogram)</em>
  • 26370 pounds = X kilograms

  • <em>If we cross multiply, we have </em>

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X = 11971.98 Kg

  • Therefore, mass in kilograms is  (11971.98 Kg)

Learn more   at : brainly.com/question/17482095

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