3 years ago

Calculate the density of a solid that has a volume of 2cm3 and a mass of 3g

Chemistry

1 answer:

katrin2010 [14]3 years ago

8 0

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

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How much heat is released as the temperature of 465 g of water drops from 75.0°C to 18.2°C?

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The heat released : -110560.632 J

<h3>Further explanation</h3>

Heat can be calculated using the formula:

Q = mc∆T

Q = heat, J

m = mass, g

c = specific heat, joules / g ° C

∆T = temperature difference, ° C / K

<h3>Known</h3>

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Then the heat :

$\tt Q=m.c.\Delta T\\\\Q=465\times 4.186\times -56.8\\\\Q=\boxed{\bold{-110560.632~J}}\rightarrow -=exothermic$

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Explanation:

yee 5 points!

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