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ankoles [38]
3 years ago
14

at atmoshperic pressure, a balloon contains 2.00L of nitrogen of gas. How would the volume change if the Kelvin temperature were

only 75 percent of its original value
Chemistry
1 answer:
Nataly [62]3 years ago
5 0

<u>Answer:</u> The percent change in volume will be 25 %

<u>Explanation:</u>

To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where,

V_1\text{ and }T_1 are the initial volume and temperature of the gas.

V_2\text{ and }T_2 are the final volume and temperature of the gas.

We are given:

V_1=2L\\T_1=T_1\\V_2=?\\T_2=75\% \text{ of }T_1=0.75\times T_1

Putting values in above equation, we get:

\frac{2L}{T_1}=\frac{V_2}{0.75\times T_1}\\\\V_2=\frac{2\times 0.75\times T_1}{T_1}=1.5L

Percent change of volume = \frac{\text{Change in volume}}{\text{Initial volume}}\times 100

Percent change of volume = \frac{(2-1.5)}{2}\times 100=25\%

Hence, the percent change in volume will be 25 %

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A truckload of apples weighs 2550 lbs. If 5 (exact) apples weigh 1250 g, how many apples are in the truck?
egoroff_w [7]

Answer:

There are 4,626 apples in the truck.

Explanation:

Mass of  5 apples = 1250

Mass of an apple = \frac{1250 g}{5}=250 g

Mass of apples in the truck = 2550 lbs

1 lbs = 453.592 g

2550 lbs=2550\times 453.592 g

Let the number of apples with mass of 2550 lbs be a.

a\times 250 g=2550\times 453.592 g

a=\frac{2550\times 453.592 g}{250 g}=4,626.63

4,626.63 ≈ 4,626

So, there are 4,626 apples in the truck.

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In the ground state, an atom of which element has two valence electrons?
Akimi4 [234]
I would say Ni so yeah thats ur answer


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sleet_krkn [62]
Answer is A. The reason to create such is to conduct electricity, and metal conducts electricity.

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3 years ago
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What is the atomic mass of an element that has 6 protons, 7 neutrons, and 6 electrons?
GREYUIT [131]

Answer:

13

Explanation:

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Answer:

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