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AysviL [449]
3 years ago
9

Professor Whitney has a sample of lead and a sample of iron. The samples have equal mass. When Whitney heats the samples, the le

ad reaches a higher temperature than the iron, even though both samples absorbed the same amount of thermal energy. What can Whitney conclude from this experiment?
Chemistry
1 answer:
Juliette [100K]3 years ago
3 0
Iron radiates energy faster than lead. Iron has higher heat conductivity than lead.





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2 years ago
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If there are 80 liters of argon gas in a piston and the piston expands the gas until its volume is 2000 liters with a pressure o
Mice21 [21]

Answer: The correct answer is A. 11.5 atm. The temperature is held constant at 293 K, therefore, we can use Boyle's Law to determine the initial pressure. Boyle's Law states that there is an inverse relationship between pressure and volume of gases. Therefore, as volume increases, the pressure will decrease and vice versa.

Further Explanation:

Boyle's Law can be mathematically expressed as:

P_{initial}V_{initial}\ = P_{final}V_{final}

In this problem, we are given the values:

P(initial) = ?

V(initial) = 80 L

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Plugging in these values into the equation:

P_{initial}(80 \ L) = \ (0.46 \ atm)(2000 \ L)\\P_{initial} \ = \frac{(0.46 \ atm) \ (2000 \ L)}{80 \ L}\\P_{initial}\ = 11.5 atm\\

The initial pressure was 11.5 atm. Since the volume increased or expanded, the space where the gas particles move is bigger, so the frequency of collisions with the wall of the container and with other particles are effectively decreased. This, therefore, decreases the pressure from 11.5 to 0.46 atm.

Learn More

  1. Learn about Charles' Law brainly.com/question/1421697
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Keywords: gas, Boyle's Law, Ideal Gas Law

7 0
3 years ago
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kogti [31]

Answer:

hi! merry xmas!

Explanation:

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6 0
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sergeinik [125]
ANSWER:

mL, g, m


MARK ME BRAINLIEST PLEASE
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SVETLANKA909090 [29]
It has 7.22 moles.... mole =mass/molar mass
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130/18=mole
7 0
3 years ago
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