Answer:
M=44.02g/mol
Explanation:
The molar mass (
�
M) of a substance is calculated by adding up the atomic masses of all the atoms present in one mole of that substance. For laughing gas (
�
2
�
N
2
O), which contains two nitrogen atoms (
�
N) and one oxygen atom (
�
O), the equation to calculate the molar mass is:
�
=
2
×
Atomic mass of nitrogen
+
1
×
Atomic mass of oxygen
M=2×Atomic mass of nitrogen+1×Atomic mass of oxygen
The atomic masses of nitrogen (
�
N) and oxygen (
�
O) are approximately 14.01 g/mol and 16.00 g/mol, respectively. Therefore, the equation becomes:
�
=
2
×
14.01
g/mol
+
1
×
16.00
g/mol
M=2×14.01g/mol+1×16.00g/mol
�
=
28.02
g/mol
+
16.00
g/mol
M=28.02g/mol+16.00g/mol
�
=
44.02
g/mol
M=44.02g/mol
So, the molar mass of 1 mol of laughing gas (
�
2
�
N
2
O) is approximately
44.02
g/mol
44.02g/mol.
