The compound cisplatin, pt(nh3)2cl2 , has been studied extensively as an antitumor agent. a. calculate the elemental percent composition by mass of cisplatin. b. cisplatin is synthesized as follows: k2ptcl4 (aq) + 2nh3(aq) â pt(nh3)2cl2 (s) + 2kcl (aq) what mass of cisplatin can be made from 100.g of k2ptcl4 and sufficient nh3? what mass of kcl is also produced?

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:

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the average time it took the car to travel 0.50 meters was 2.61 seconds

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