Question

How many grams are in 3.58 x 10^23 molecules of dicarbon hexahydride?

Answer 1

Answer:

Mass = 18 g

Explanation:

Given data:

Number of molecules of Dicarbon hexahydride = 3.58 × 10²³ molecules

Mass of  Dicarbon hexahydride = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

3.58 × 10²³ molecules × 1 mol / 6.022 × 10²³  molecules

0.6 mol

Mass of Dicarbon hexahydride:

Mass = number of moles × molar mass

Mass = 0.6 mol × 30 g/mol

Mass = 18 g