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leonid [27]
3 years ago
13

Why do pumps require energy?

Chemistry
2 answers:
Goshia [24]3 years ago
7 0

Answer:

b

Explanation:

pav-90 [236]3 years ago
5 0

Answer:

Answer choice B

Explanation:

All things in the universe naturally flow from areas of higher concentration or energy to those with lower concentration or energy. A pump reverses this process, which means that you need to add energy to make it work. Hope this helps, and PM me with any further questions!

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PLEASE HELP WILL MARK AS BRAINEST!!!!!!!!!!!!
Elanso [62]

The answers to your question is B hope this helps.

5 0
3 years ago
A sealed container can hold
svp [43]

0.216 moles of gas can the container hold if a sealed container can hold 0.325 L of gas at 1.00 atm and 293 K.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

V=5 L

P = 1.05 atm

T = 296 K

Putting value in the given equation:

\frac{PV}{RT}=n

n= \frac{1.05 atm\; X \;5 L}{ 0.08206 L.atm / mol K  X 296 K}

Moles = 0.216 moles

Hence, 0.216 moles of gas can the container hold if a sealed container can hold 0.325 L of gas at 1.00 atm and 293 K.

Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

6 0
2 years ago
Is an apple a pure substance or a mixture?
guajiro [1.7K]
An apple would be a mixture. While a mixture is a combination of elements and substances, a pure substance acts as an element itself, therefore, having the properties of only THAT certain element. 


6 0
3 years ago
Read 2 more answers
What happens when chlorine from<br> CFCs mixes with ozone?
Svetach [21]

Answer:

Because they are extremely stable molecules, CFCs do not react easily with other chemicals in the lower atmosphere. ... Free chlorine atoms then react with ozone molecules, taking one oxygen atom to form chlorine monoxide and leaving an ordinary oxygen molecule.

Explanation:

5 0
3 years ago
Models need to be changed when _______.
dedylja [7]
B. When scientific understanding changes. 
8 0
3 years ago
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