There are ________ main groups in the modern periodic table of elements.
1 answer:
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Answer:
A. Volume is unchanged
Explanation:
= initial pressure of the gas = 722 torr = 96258.7 pa
= final pressure of the gas = 0.950 atm = 96258.75 pa
= initial temperature = 32 °F = 272.15 K
= final temperature = 273 K
= initial volume
= final volume
Using the Equation
Inserting the values
Hence the volume is unchanged.
Answer:
171.5Watts
Explanation:
Given parameters:
Mass = 5kg
Distance = 28m
Time = 8s
Unknown:
Power = ?
Solution:
Power is the rate at which work is done;
Power =
Work done = force x distance = mg x d =
m is the mass
g is the acceleration due to gravity
d is the distance
Work done = 5 x 9.8 x 28 = 1372J
Power = = 171.5Watts