Question

The number of mole present in 128 g of oxygen is 16.

• A. True
• B. False

Answer 1

Answer: (B)

The given statement is False

• The formula used to calculate the number of mole is

$\frac{\text{Mass in grams}}{\text{Gram atomic mass of the element}}$ Gram atomic mass of oxygen($O_2$) is 316 g.

• Therefore, number of moles present in 128 grams of oxygen
  = $\frac{128}{16}$ = 8 mole

Hence the given statement that the number of moles present in 128 g of oxygen is 16. is False