Question

How many grams does 6.60 x 10^22 molecules of SiO weigh?

Answer 1

Answer:

mass = 6.56 grams

Explanation:

No of molecules = No of moles ×  Avogadro's constant

Similarly, number of moles = mass/ molar mass

∴

$\text{number of molecules} = \dfrac{mass }{molar mass}}\times avogadro's \ no$

$6.60*10^{22}}} = \dfrac{mass }{60.0 \ g/mol} \times 6.022 \times 10^{23}$

$6.60*10^{22}}}\times 60.0 \ g/mol =mass\times 6.022 \times 10^{23}$

$mass = \dfrac{6.60*10^{22}\times 60.0 \ g/mol}{6.022 \times 10^{23}}$

mass = 6.56 grams