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erik [133]
3 years ago
9

Which of the following descriptions explain the process of water freezing?

Chemistry
2 answers:
g100num [7]3 years ago
7 0
The process of freezing occurs when B) water molecules slow down until they begin to form stronger bonds together. These stronger bonds eventually turn the water molecules into a solid formation. 
eduard3 years ago
3 0

The correct option is B.

When the temperature of water is reduced, the water cools down and the molecules of the water lose energy and move slowly. As the water is cooling down its volume expands. When the temperature of the water reaches zero degree Celsius, the molecules of the water stick together and form solid ice, thus turning from a liquid state to a solid state.

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Ecosystems do not have similar climates and every plant is different True or false
Soloha48 [4]
This is false. Some plants are the same or at least very similar
4 0
2 years ago
How many moles would there be in 1.5x10^24 molecules of water?
Nookie1986 [14]

Answer:

5.85 moles

Explanation:

Moles in (3.52 X 10^24) molecules of water. 3.52 x 10^24 molecules x `1mol/6.02 x 10^23 molecules = 5.85 moles of H2O.

3 0
3 years ago
2Al2O3 (s) + 3C (s) LaTeX: \longrightarrow ⟶ 4Al (s) + 3CO2 (g)
densk [106]

Answer:

Percent yield = 79.79 %

Explanation:

Given data:

Mass of Al₂O₃ = 821 g

Mass of Al = 349 g

Percent yield = ?

Solution:

Chemical equation:

2Al₂O₃ + 3C     →      4Al  + 3CO₂

Number of moles of Al₂O₃:

Number of moles = mass/molar mass

Number of moles = 821 g/ 101.96 g/mol

Number of moles = 8.1 mol

Now we will compare the moles of Al with Al₂O₃.

                Al₂O₃        :         Al

                    2           :          4

                  8.1           :      4/2×8.1 = 16.2 mol

Mass of Al:

Mass = number of moles × molar mass

Mass = 16.2 mol ×  27 g/mol

Mass = 437.4 g

Percent yield:

Percent yield = (actual yield / theoretical yield)× 100

Percent yield =  (349 g/ 437.4 g) × 100

Percent yield = 79.79 %

6 0
3 years ago
First question and I'm already stuck. Help pls!
stich3 [128]

Answer:

definite volume. indefinite shape

7 0
3 years ago
Read 2 more answers
Describe what happens in the cell before the chemical reaction.
Zina [86]

___________________________________________________________

Answer:

Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is referred to as metabolism. Metabolism includes both exothermic (heat-releasing) chemical reactions and endothermic (heat-absorbing) chemical reactions.

___________________________________________________________

6 0
3 years ago
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