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3 years ago

Is the temperature at which a substance melts the same as the temperature changes from a liquid to a solid

Chemistry

1 answer:

sasho [114]3 years ago

8 0

Answer:

No.

Explanation:

If the temperature changes a substance from it's original form, going from solid to liquid, then the temperature required to change it from a liquid to a solid are the opposite. For example, Ice is Water (H2O) in it's solid form. In order to freeze water into ice, the temperature must be very low. In order to melt the ice back into water, the temperature must be higher than the freezing point, but not too high or it will boil, making it a gaseous substance instead.

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Explanation:

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3 years ago

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3 years ago

A(n) __________ eclipse might occur when the Earth, Moon, and Sun are in the positions shown in the picture.

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3 years ago

Read 2 more answers

An equilibrium mixture of N2, O2and NO gases at 1500K is determined to consist of 6.4 x 10-3Mof N2, 1.7 x 10-3M O2, and 1.1 x 10

sp2606 [1]

Answer

Explanation:O2 = 1.7×10-3M;

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NO = 1.1 10-5M.

4 0

2 years ago

Chemical Equations

vagabundo [1.1K]

Answer:

0.712 moles of NO₂ are formed.

Explanation:

First, we need to write the balanced equation:

2 N₂O₅(g) ⇄ 4 NO₂(g) + O₂(g)

From the balanced equation, we can see the relationship between the moles of N₂O₅ and the moles of NO₂. Every 2 moles of N₂O₅ that react, 4 moles of NO₂ are formed. Let us apply this relationship to the information given by the problem (0.356 moles of N₂O₅):

$0.356molN_{2}O_{5}.\frac{4molNO_{2}}{2molN_{2}O_{5}} =0.712molNO_{2}$

3 0

3 years ago