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allochka39001 [22]
3 years ago
12

Can someone explain these?​

Chemistry
1 answer:
elena-s [515]3 years ago
6 0

Answer:

what??

Explanation?/

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When a sample of gas is cooled, it condenses into a liquid. In which of the following ways do the molecules of the original gas
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<span>c. The molecules are closer together as a gas than they do as a liquid.</span>
3 0
4 years ago
A gas at 300 k and 4.0 atm is moved to a new loacation with a temperature of 250 k. The volume changes from 5.5 L to 2.0 L. What
alexgriva [62]
Answer is: <span>the pressure of the gas is 9,2 atm.
</span>p₁ = 4,0 atm.
T₁ = 300 K.
V₁ = 5,5 L.
p₂ = ?
T₂ = 250 K.
V₂ = 2,0 L.
Use combined gas law - the volume of amount of gas is proportional to the ratio of its Kelvin temperature and its pressure.<span> 
</span>p₁V₁/T₁ = p₂V₂/T₂.
4 atm · 5,5 L ÷ 300 K  = p₂ · 2,0 L ÷ 250 K.
0,0733 = 0,008p₂.
p₂ = 9,2 atm.

4 0
3 years ago
Why do humans sweat? what is unique about water that makes sweat a useful biological process
andriy [413]
Humans sweat to expel toxins.

They also sweat because sweat helps the body cool down. During exercise, body temperature rises, sweat helps the body cool down.


Sweat also contain sodium. Which is why it’s salty.
7 0
3 years ago
c. Propanol has the chemical formula C3H OH. Write and balance the chemical reaction for the combustion of propanol.​
Lilit [14]
Combustion reactions always contain products of CO + H2O with the addition of O2 (oxygen) in the reactant.

In this case it would be:

C3H7OH OR C3H8O (if you count up all the H’s)

We’re just going to use C3H7OH since that’s what you were given so it’ll be easier for you that way.


C3H7OH + O2 -> CO2 + H2O

Balanced:

2 C3H7OH + 9 O2 -> 6 CO2 + 8 H2O
5 0
3 years ago
Can someone name an element that doesn’t match its abbreviation?
sp2606 [1]

Answer:

Gold, silver and sodium.

Explanation:

Gold, silver and sodium are the name of the elements which does not match to their abbreviation. It is because those names are comes from other language. For example, the symbol of sodium is Na which comes from Natrium that is a Latin word. The symbol of gold is Au which comes from Aurum that is also a Latin word. The symbol of silver is Ag which comes from a Latin word i. e. Argentum.

5 0
4 years ago
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