Answer:
500N
Explanation:
Basically the weight of water displaced is the amount of upthrust. The upthrust is equal to the weight of the water moved by the submerged part of the body and therefore is equal to 500N.
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Exothermic reactions are reactions that release energy.
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Answer:
1.17 x 10^2 L
Explanation:
We can find the volume of the gas by using the ideal gas law:

where we have:
is the pressure
V is the volume
n = 4.8 mol is the number of moles
R = 0.0821 L · atm/mol · K is the ideal gas constant
is the temperature
Solving the equation for V, we find the volume

This is because most of the atom cannot move due to being held in place by surronding atoms, but electrons can move around and travel