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erik [133]
3 years ago
10

All elements have a unique atomic emission spectrum. In which of the following scenarios would this fact be most useful?

Chemistry
1 answer:
djyliett [7]3 years ago
6 0
Optrion A: when trying to determine a star's chemical composition.

Because unique atomic emission spectrum, analyzing the  emission spectrum you can tell the chemical composition.
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A gas has a pressure of 2.31 atm and occupies
jenyasd209 [6]

Answer:

The pressure of the gas after getting compressed is 1.92 L.

Explanation:

To calculate the new pressure, we use the equation given by Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.  

The equation given by this law is:

P_1V_1=P_2V_2  (At constant temperature)

where,

P_1\text{ and }V_1 are initial pressure and volume.

P_2\text{ and }V_2 are final pressure and volume.

We are given:

P_1=2.31 atm\\V_1=8 L\\P_2=?mmHg\\V_2=1.92 L

Putting values in above equation, we get:

2.31 atm\times 8 L=P_2\times 1.92 L

P_2=\frac{2.31 atm\times 8 L}{1.92 L}

P_2=9.625 atm

The pressure of the gas after getting compressed is 1.92 L.

4 0
4 years ago
How many mL are in 7.3 dL?
Arte-miy333 [17]

Answer:

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Explanation:

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Answer:

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Explanation:

7 0
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Levart [38]

Answer:

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