False ...................
9L
Explanation:
Given parameters:
Volume of gas = 6L
Initial Temperature = 7°C to kelvin = 273 + 7 = 280K
Final temperature = 147°C to kelvin = 273 + 147 = 420K
Unknown:
Final gas volume = ?
Solution:
To solve this problem, we are going to use Charles's law. Charles's law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".
Mathematically;

Input the parameters;

V =
= 9L
learn more:
Charles's law brainly.com/question/7434588
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What can be explained? Perhaps you could give us the full question?
Answer:
0.21m
Explanation:
Note that the 200 J before breaking legs is Kinetic energy
So if potential energy= kinetic energy
Then 200J = mgh
h= 200/75x 9.8
= 0.21m so the maximum height will be 0.21m