Question

Cisplatin,an anticancer drug, has the molecular formula pt(nh3)2cl2. what is the mass of one molecule

Answer 1

Molar mass of cisplatin = 300

Mass of 1 molecule = molar mass/6.022 × 10^23

=300/6.022×10^23

=3×1.66×10^-24

=4.98×10^-22

Answer 2

Answer: The mass of one molecule of cis-platin is $4.9817\times 10^{-22}g$

Explanation:

Molar mass of cis-platin = $[195+(2\times 14)+(6\times 1)+(2\times 35.5)]=300g/mol$

This is the mass of 1 mole of a molecule.

According to mole concept:

1 mole of a compound ontains $6.022\times 10^{23}$ number of molecule.

This means that, mass of $6.022\times 10^{23}$ molecules is 300 grams.

So, mass of 1 molecule will be = $\frac{300}{6.022\times 10^{23}}=49.817\times 10^{-23}=4.9817\times 10^{-22}g$

Hence, the mass of one molecule of cis-platin is $4.9817\times 10^{-22}g$