How many grams are there in 9.4 x 1025 molecules of H2?

Mass = 312 g

Explanation:

Given data:

Number of molecules of H₂ = 9.4 × 10²⁵

Mass in gram = ?

Solution:

First of all we will calculate the number of moles of H₂.

1 mole of H₂ contain 6.022× 10²³ molecules

9.4 × 10²⁵ molecules  × 1 mol / 6.022× 10²³ molecules

1.56× 10² mol

156 moles of H₂:

Mass in gram:

Mass = number of mole × molar mass

Mass = 156 mol × 2 g/mol

Mass = 312 g

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)