Question

calculate the number of moles present in 60 gram of calcium ( given molar mass of calcium= 40u)​

Answer 1

$\bold{\underline {ANSWER}}$

$\bold {What\ is\ mole\ ?}$

$\implies$ A mole is defined as a amount of a substance which contains exactly 6.022 × 10^23 particles.

It is base unit of a substance.

$\bold{Molar\ mass}$ = It is known as the mass of all the atoms or molecules contained in an element.

For ex-

Molar mass of carbon = 12

Molar mass of argon = 40

$\bold {Given\ mass}$ = 60g

$\bold {Molar\ mass}$ = 40g

No. of moles = $\bold{\dfrac {given\ mass}{molar\ mass}}$

No. of moles = $\dfrac {60}{40}$

No. of moles = 1.5

$\bold {There\ are\ 1.5\ moles\ present\ in\ 60\ gram\ of\ calcium}$