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Inessa [10]
3 years ago
10

PLS HELP 20 POINTS I WILL ALSO MARK BRAINLIEST

Chemistry
2 answers:
Fudgin [204]3 years ago
6 0

Answer:

Explanation:

The total change of energy in any system is always equal to the total energy transferred into or out of the system. This is called conservation of energy. ... Energy can also be transferred from place to place by electric currents. Heating is another process for transferring energy.

Nady [450]3 years ago
4 0
Equally Energy system
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If the volume and Kelvin temperature are reduced by one-half what will happen to the pressure???
jolli1 [7]

Answer:

the pressure will decrease

Explanation:

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What is the concentration of HNO3 if 5.00×10−2 mol are present in 905 mL of the solution?
Zepler [3.9K]

Answer:

0.05525 M or 55.25 mM

Explanation:

Concentration = moles/volume

*Note that volume is expressed in L so you will need to convert mL > L here

C= \frac{n}{V}\\C= \frac{0.05}{0.905}\\C=0.05525

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How can the conductivity of a salt solution be decreased?
Musya8 [376]

Answer:

B. Add more water to decrease the concentration.

Explanation:

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What is the answer for #11
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An unknown or changeable quantity is called a(n)...
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I think the answer would be dependent variable. An unknown or changeable quantity is called a dependent variable. It <span>is what you measure in the experiment and what is affected during the experiment. Hope this answers the question. Have a nice day.</span>
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