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Andreyy89
3 years ago
14

Find the total mass in kilograms of a ring that contains a 5.0 x 10 -1 carat diamond and 7.00 grams of gold.

Chemistry
1 answer:
PIT_PIT [208]3 years ago
5 0

Answer:

49 вот правильный ответ

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During the combustion of 2.00 g of coal, the temperature of 500 g of water inside the calorimeter increased from 25.0°c to 43.7°
pantera1 [17]
Answer is: 39,083kJ.
m(coal) = 2,00g.
m(water) = 500g.
ΔT = 43,7°C - 25°C = 18,7°C, <span>difference at temperatures.</span>
c(water) = 4,18 J/g·°C, <span>specific heat of water
</span>Q = m(water)·ΔT·c(water), heat of reaction.
Q = 500g·18,7°C·4,18J/g·°C.
Q = 39083J = 39,083kJ.
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3 years ago
How is mercury obtained and separated from other nearby substances?​
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Answer:

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So we know the number of moles of each compound. If we need to know the concentration we must know the number of moles that the compounds react with...

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Only 11% of all the energy used in the US comes from a renewable source. Why is this a<br> problem?
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1 and 4

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