Answer:
Number of mole = 0.0342 mole of Boron
Step-by-step explanation:
One mole of a substance is equal to 6.022 * 10^23 units of that substance.
According to the definition in chemistry, mole is defined as the mass of substance containing the same number of fundamental units.
To calculate the number of mole, we will use the formula
n = m/Mm
n = number of mole
m = number of mass
Mm = number of molar mass
Molar mass of boron = 10.811g/mol
Mass of boron = 3.70 * 10^-1g
Using the formula
n = m/Mm
n = 3.70 * 10^-1 / 10.811g/mol
n = 0.0342 mole