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iren [92.7K]
3 years ago
7

A chemical reaction is carried out in a closed container. The energy absorbed by the chemical reaction is 50 kJ. What is the ene

rgy liberated from the air or the walls of the container?
A)50 kJ
B)75 kJ
C)25 kJ
D)100 kJ
Chemistry
1 answer:
Contact [7]3 years ago
8 0

Answer:

A) 50 kJ.

Explanation:

  • According to the law of conservation of energy that energy can not be destroyed or created from nothing but it can be converted from one form to another.
  • In a closed system; the amount of heat released by a part of the system is equal to the amount of heat absorbed by other parts of the system.

<em>Q released = Q absorbed.</em>

<u><em>So, the energy liberated from the air or the walls of the container is 50 kJ.</em></u>

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number 2 is B

number 3 is D

Number 4 is C

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5 0
3 years ago
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How many valence electrons does an atom of al possess?
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Answer:

3

Explanation:

Third element to right

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Which of the following regarding atmospheric pressure is true?
butalik [34]

Answer:

1- Option (A)

2- Option (A)

Explanation:

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7 0
3 years ago
Explain why hydrogen can only have 2 valence electrons around it when it bonds to other items. What is the maximum number of bon
lys-0071 [83]

Answer:

In first shell only 2 electrons are present in hydrogen only one electron is present in valence shell. To complete its duplet hydrogen can share lose or gain only one electron to form chemical bond.

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Explanation:

7 0
3 years ago
SOMEONE PLS HELP
Gekata [30.6K]

Answer:

<h2>464.85 mL</h2>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

Since we're finding the new volume

V_2 =  \frac{P_1V_1}{P_2}  \\

100.7 kPa = 100,700 Pa

95.1 kPa = 95,100 Pa

We have

V_2 =  \frac{100700 \times 439}{95100}  =  \frac{44207300}{95100}  \\  = 464.8506...

We have the final answer as

<h3>464.85 mL</h3>

Hope this helps you

6 0
3 years ago
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