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Veseljchak [2.6K]
3 years ago
8

The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is _____________.dec

reasingincreasingunchanged
Chemistry
1 answer:
Zepler [3.9K]3 years ago
8 0
Here is your answer:

Your answer is A decreasing.

Reason: That's because when your turning into a solid your not moving and kinetic energy is the around of movement an object is moving.

Your answer is A.
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How can you tell baking a cake produces a chemical change?
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Answer: see below

Explanation:

1. Change in smell

2. Heat given off

3. New substance (cake) cannot be separated into the original ingredients

For detailed, step-by-step explanations you can visit my fiverr account: kesja_

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7 0
2 years ago
How does matter change from one state to another?
Rzqust [24]
Heating up, mostly. Solid can be heated to liquid, then to gas, then eventually to plasma.
4 0
3 years ago
ASAP!
Andrei [34K]

Answer:

8.3334%

Explanation:

You have two masses. To find the percent of sodium chloride in water by mass, you divide the mass of NaCl by water. First, make both units the same. Easiest is to convert kg into g. 1.5kg = 1500g

125g NaCl/1500g H2O = 0.0833333333 ==> 8.3334%

5 0
3 years ago
Calculate the mass of carbon dioxide released when 185.000 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming
Vinvika [58]

Answer:

The answer to your question is: 65.9 g released of CO2

Explanation:

MW CO2 = 44 g

MW CuCO3 = 123.5 g

CO2 released = ?

CuCO3 = 185 g

                            CuCO3     ⇒    CO2   +    CuO

                             123.5  -----------  44g

                             185 g -----------    x

                           x = (185 x 44) / 123.5

                           x = 65.9 g released of CO2

8 0
3 years ago
Name two methods of separating mixtures. Describe the property each of these separations based
grigory [225]

Answer:

Distillation and using Chromatography

Explanation:

Distillation:

based on using boiling point.

Ex: separating a mixture of water and sugar by boiling the water away.

Chromatography:

based on absorption

Ex: separating the different colours that make up a black marker

8 0
3 years ago
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