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Ber [7]
3 years ago
9

The density of copper is 8.68 g/mL use the density value to determine how many moles are

Chemistry
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

17.1 mol

Explanation:

(8.68g/mL * 125 mL) = 1085 g

1085 g/ (63.55 g/mol) = 17.1 mol

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Explain how the following experimental errors affect the final calculation of the kilocalories per gram for a food item. Be spec
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Answer:

a) the final kilocalories per gram for food will be less because the mass was reduced

b)the final kilocalories per gram for food will be less since

c) the final kilocalories per gram for food will be less since the reaction will eventually go to completion

d) the final kilocalories per gram for food will be more.

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a) the final kilocalories per gram for food will be less because the mass was reduced from 110.3 to 101.3g

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c) the final kilocalories per gram for food will be less since the reaction will eventually go to completion

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4 years ago
Which process is happening in the reaction that is shown
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3 years ago
The terms Q and K refer to reaction components at non-equilibrium and equilibrium conditions, respectively. For a forward reacti
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Answer:

The value of Q must be less than that of K.

Explanation:

The difference of K and Q can be understood with the help of an example as follows

         A ⇄ B

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In this case ratio of  [B] and  [A]  that is

K =  [B] / [A] which is called equilibrium constant.

But if we measure the concentration of A and B ,before equilibrium is reached , then the ratio of the concentration of A and B will be called Q. As reaction continues concentration of A increases and concentration of B decreases. Hence Q tends to be equal to K.

Q = [B] / [A] . It is clear that Q < K before equilibrium.

If Q < K , reaction will proceed towards equilibrium or forward reaction will

proceed .

8 0
3 years ago
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