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Alex17521 [72]
3 years ago
7

The Symbol below is used to represent what component in a circuit?

Chemistry
2 answers:
FrozenT [24]3 years ago
8 0
Actually, I strongly believe it is a switch.
sineoko [7]3 years ago
8 0

Answer: Option (C) is the correct answer.

Explanation:

A device which is used to operate an electrical appliance is known as switch.

When a switch is closed then circuit gets complete and current completely flows into the circuit. Whereas when a switch is open then circuit is incomplete and current does not flow into the circuit.

Therefore, we can conclude that the symbol below is used to represent switch component in a circuit.


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When 92.0 g of ethanol (c2h5oh are vaporized at its boiling point of 78.3°c, it requires 78.6 kj of energy. what is the approxim
Juli2301 [7.4K]

The solution would be like this for this specific problem:

<span>(78.6 kJ) / (92.0 g / (46.0684 g C2H5OH/mol)) = 39.4 kJ/mol </span>

<span>39.3 </span>

So the approximate molar heat of vaporization of ethanol in kJ/mol is 39.3.

I hope this answers your question.

7 0
3 years ago
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Consider that the room is a closed system. Ryan uses the chemical energy in his muscles to create the energy of motion. He uses
Vilka [71]
D.

This is in accordance with the law of conservation of energy.
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3 years ago
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What two chemical elements make up the majority of our sun
Vsevolod [243]
The two  chemical elements that make up the <span>majority of our sun is :
"Hydrogen" and "Helium"

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8 0
3 years ago
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A solution is prepared from 4.5701 g of magnesium chloride and 43.238 g of water. The vapor pressure of water above this solutio
balandron [24]

Answer:

i = 2.483

Explanation:

The vapour pressure lowering formula is:

Pₐ = Xₐ×P⁰ₐ <em>(1)</em>

For electrolytes:

Pₐ = nH₂O / (nH₂O + inMgCl₂)×P⁰ₐ

Where:

Pₐ is vapor pressure of solution (<em>0.3624atm</em>), nH₂O are moles of water, nMgCl₂ are moles of MgCl₂, i is Van't Hoff Factor, Xₐ is mole fraction of solvent and P⁰ₐ is pressure of pure solvent (<em>0.3804atm</em>)

4.5701g of MgCl₂ are:

4.5701g ₓ (1mol / 95.211g) = 0.048000 moles

43.238g of water are:

43.238g ₓ (1mol / 18.015g) = 2.400 moles

Replacing in (1):

0.3624atm = 2,4mol / (2.4mol + i*0.048mol)×0.3804atm

0.3624atm / 0.3804atm = 2,4mol / (2.4mol + i*0.048mol)

2.4mol + i*0.048mol = 2.4mol / 0.9527

2.4mol + i*0.048mol = 2.5192mol

i*0.048mol = 2.5192mol - 2.4mol

i = 0.1192mol / 0.048mol

<em>i = 2.483</em>

<em />

I hope it helps!

4 0
3 years ago
3/4(x-2)=x-1 please answer me ​
Elan Coil [88]

Answer:

-2

Explanation:

3/2 (x-2) = x-1

<=> 3/4 x - 3/2 = x-1

<=> 3/4 x - x = 3/2 -1

<=> -1/4 x =1/2

<=> x= -2

3 0
3 years ago
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