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Finger [1]
2 years ago
13

A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3,645 grams.

Chemistry
1 answer:
kvasek [131]2 years ago
8 0

Answer:

v=9*9*9=729 ml

3645/729= 5g/cm 3

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Reduction happens when the species gains electrons.
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Multiply 2nd reaction by 2
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add the 2 equations 
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add 6NO₃⁻ ions to each side 
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the balanced redox reaction equation is as follows;

3Cu(s) + 8HNO₃(aq) --> 3Cu(NO₃)₂ (aq)+ 2NO(g) + 4H₂O(l)
4 0
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