Question

Which of the following formulae is not correctly depicted?

• A. Molar mass =

  $\frac{Massofsubs\tan ce}{Molesofsubs\tan ce}$ Or $M = \frac{W}{n}gmol^{- 1}$

• B. Number of moles of a substance

  $= \frac{Massofsubs\tan ce}{Molarmass}$or $x = \frac{w}{m}mol$

• C. Number of molecules

  $= \frac{Massofthesubs\tan ce}{Molarmass} \times Avogadro'sno$ Or no. of molecules$= \frac{w}{M} \times 6.023 \times 10^{23}$molecules

• D. Mole × Molar mass = Number of molecules or n × m = Number of molecules

Answer 1

Answer: (D)

Mole × Molar mass = Number of molecules or n × m = Number of molecules

Answer 2

(4) : Mole × Molar mass = Mass of substance

$n \times M = w$