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nignag [31]
3 years ago
9

[Picture] Fuse the two elements together.

Chemistry
1 answer:
svet-max [94.6K]3 years ago
4 0

K2SO4    MgSO4      Al2(SO4)3     Ge2(SO4)4

KNO3     Mg(NO3)2   Al(NO3)3       Ge(NO3)4

KCH3COO   Mg(CH3COO)2      Al(CH3COO)3     Ge(CH3COO)4 

Note: all of the numerical are subscript to each element or compound.
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What is ΔE in kJ for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same t
kenny6666 [7]

Answer: 20.7 kJ

Explanation:

According to first law of thermodynamics:

\Delta E=q+w

\Delta E=Change in internal energy

q = heat absorbed or released

w = work done or by the system

w = work done on the system=-P\Delta V  {Work is done on the system is positive as the final volume is lesser than initial volume}

w = 4.51 kcal = 4.51\times 4.184kJ=18.9kJ    (1kcal = 4.184kJ)

q = +1.79 kJ   {Heat absorbed by the system is positive}

\Delta E=+1.79+(18.9)=20.7kJ

Thus \Delta E for a system that receives 1.79 kJ of heat from surroundings and has 4.51 kcal of work done on it at the same time is 20.7 kJ

4 0
3 years ago
Use what you know about the orbits of Earth and the moon to sort the phrases into the correct Category.
Kobotan [32]

\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Astrophysics.

Let's categorize them eventually ==>

1.) Earth ==> 1.) travels around the Sun

2.) takes 365.25 days .

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8 0
3 years ago
Which phase of matter has a fixed volume but variable shape?
jek_recluse [69]
The answer is "Liquid".

Hope I could help you!
Have a great day ;)
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The gas that makes up about 12 percent of the earths atmosphere is ?
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Answer:

You may be referring to the gas that makes up 21% of the earth's atmosphere, which is oxygen.

Explanation:

According to NASA, the gases in Earth's atmosphere include:

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A gas can move around freely while a solid is hard and can’t move around freely
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