Answer:
C2H4
Explanation:
This compound has no oxygen atoms at all.
H2SO4
oxidation number of hydrogen :- +1
oxidation number of oxygen :- -2
if oxidation number of H2SO4 is x
2x (+1) + x + 4x (-2) = 0
+ 2 + x -8 = 0
x = +6
<u>oxidation number of H2SO4 :- +6</u>
Answers:
a) 10155 J
b) 16.6 J
Explanation:
According to the First Law of Thermodynamics we have:

Where:
is the total change in the internal energy of a system
is the heat exchanged between the system and its surroundings
is the work done on the system
a) In this case
and
, hence:

b) In this case
and
, hence:
