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Over [174]
4 years ago
6

Why does water expand when it freezes

Chemistry
2 answers:
snow_lady [41]4 years ago
7 0
Because when water is a solid the molecules are packed together,making it dense, but it expands because of how cold it is, almost in the same way like heat
Nikolay [14]4 years ago
6 0
Because the molecules are moving slower as it freezes
You might be interested in
Calculate the pressure exerted on the floor when an elephant who weighs 2400 N
Inessa05 [86]

Answer:

The answer is

<h3>6000 N/m² or 6000 Pa</h3>

Explanation:

The pressure exerted by an object given the force of the object and the area can be found by using the formula

P =  \frac{f}{a}  \\

where

P is the pressure

f is the force

a is the area

From the question

f = 2400 N

a = 0.4 m²

So we have

P =  \frac{2400}{0.4}  \\

We have the final answer as

<h3>6000 N/m² or 6000 Pa</h3>

Hope this helps you

8 0
3 years ago
Can someone please help with this !!!!
insens350 [35]
I think it's less, more, more. correct me if i'm wrong
4 0
3 years ago
The pressure of a gas increases as the number of moles of gas increases because –
denpristay [2]

Answer:

  c) more particles collide with the walls of the container

Explanation:

More moles means more particles. If the volume remains the same, the collisions of more particles with the container walls cause the pressure to increase.

7 0
3 years ago
If you want to melt ice into liquid water, does the ice absorbs heat or release heat? Is this endothermic or exothermic?
kherson [118]

Answer:

Endothermic

Explanation:

This would be an endothermic reaction, due to the fact that the water would be signifigantly warmer then the ice cube, which causes it to melt.

3 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE!!! I WILL RATE BRAINLIEST!!!
lidiya [134]

Answer:

The answer to your question is:  [H+]  = 0.0016

Explanation:

Data

pH = 2.8

[H+] of the solution = ?

Formula

pH = -log [H+]

process

                2.8 =  -log [H+]           then we get antilog

      antilog (-2.8 ) = [H+]    

      [H+]  = 0.0016

6 0
3 years ago
Read 2 more answers
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