the moles would be 7.8125
divide 250g/32g/mol= 7.8125
Its a 1 to 1 mole ratio between O2 and HgO so they are the same number of moles.
Answer:
A)adding heat to the system and having the system do work on the surroundings
Explanation:
The variation in the internal energy of a system (ΔU) is given by the First Law of Thermodynamics. See the equation below:
ΔU = Q + W
Q: Heat added (+) or removed (-) from the system
W: work done on (-) or done by (+) the system
If you add heat (Q +) and have the system do work (W +), you guarantee that th internal energy of the system will increase (ΔU +).
Solids have a definite,fixed shape.. So option B which is the second checkbox ☑️ is the correct answer... l hope it helped :)
I believe its
a)224000
b)0.000000015
c)0.655
d)9000
Answer:
C. A positively or negatively charged atom