Explanation :
Antoine-Laurent Lavoisier reported four "element" classifications but included some substances that were combinations of elements rather than true elements in his listing.
He is also known as " father of modern chemistry". He gives the modern system of naming chemical substances. He also gives a theory for chemical reactivity of the oxygen.
Answer:
489 J
Explanation:
According to the first law of thermodynamics:-
![\Delta U = q + w](https://tex.z-dn.net/?f=%5CDelta%20U%20%3D%20q%20%2B%20w)
Where,
U is the internal energy
q is the heat
w is the work done
From the question,
q = + 565 J (+ sign as the heat is being absorbed)
The expression for the calculation of work done is shown below as:
![w=-P\times \Delta V](https://tex.z-dn.net/?f=w%3D-P%5Ctimes%20%5CDelta%20V)
Where, P is the pressure
is the change in volume
From the question,
= 0.85 - 0.10 L = 0.75 L
P = 1.0 atm
![w=-1.0\times0.75\ atmL](https://tex.z-dn.net/?f=w%3D-1.0%5Ctimes0.75%5C%20atmL)
Also, 1 atmL = 101.3 J
So,
(work is done by the system)
So,
![\Delta U = +565\ J-76\ J = 489\ J](https://tex.z-dn.net/?f=%5CDelta%20U%20%3D%20%2B565%5C%20J-76%5C%20J%20%3D%20489%5C%20J)
Answer:
500 N
Explanation:
Natural bouyency will keep the diver in the same place, no matter what the mass of gfs. This means if the diver is displacing with a weight of 500 N, the upthrust will also be 500 N.