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Soloha48 [4]
2 years ago
6

1) express 23kg in miligrams

Chemistry
1 answer:
Semmy [17]2 years ago
5 0
The answer is 23000000 im pretty sure.
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Copper(l) sulfide can react with oxygen to produce copper metal by the reaction cu2s + o2 => 2cu + so2. if 5.00 g of cu2s is
valentina_108 [34]
To answer this problem, we write first the stoichiometric equation. Thus we have,

Cu2S + O2 => 2Cu + SO2

Next, we check if the equation is balanced or not.

(left)     (right)
2 Cu  = 2 Cu
1 S  =  1 S
2 O = 2 O

So the stoichiometric equation is balanced, let's proceed in solving the theoretical yield of Cu given 5 g of Cu2S.

First, we solve for Cu2S in moles,
5 g Cu2S x <u>1 mol Cu2S </u>  = 0.0314 mol Cu2S
                159.16 g Cu2s

Secondly, convert moles of Cu2S to moles Cu. Note for every mole of Cu2S we get 2 moles of Cu. Thus,

0.0314 mo Cu2S x <u>   2 mol Cu     </u> = 0.0628 mole Cu<u>
</u>                                1 mol Cu2S

Lastly, we convert mole Cu to g Cu via multiplying by Cu's MW.

0.0628 mole Cu x <u>63.546 g Cu  </u> = 3.99 g Cu or 4 g Cu<u>
</u>                                1 mole Cu

<em>ANSWER: 4 g Cu</em>



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Naptha! hope i helped
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Ty for anyone helping!
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