a. Elemental percent composition is the mass percent of each element in the compound.
The formula for mass elemental percent composition = (1)
The molecular formula of cisplatin is .
The atomic weight of the elements in cisplatin is:
Platinum,
Nitrogen,
Hydrogen,
Chlorine,
The molar mass of =
=
The mass of each element calculated using formula (1):
- Platinum, %
%.
- Nitrogen, %
%
- Hydrogen, %
%
- Chlorine, %
%
b. The given reaction of cisplatin is:
According to the balanced reaction, 1 mole of gives 1 mole of
.
Now, calculating the number of moles of in 100.0 g.
Number of moles =
Molar mass of =
Number of moles of =
.
Since, 1 mole of gives 1 mole of
. Therefore, mass of cisplatin is:
For mass of :
Molar mass of =
Since, 1 mole of gives 2 mole of
. Therefore, mass of
is: