Question

how many molecules are present in the 224 grams of cao​

Answer 1

Answer:

Sony Xperia z ultra modem and router and follow me on the internet and follow me on

Answer 2

$\large\mathbb{\underbrace\purple{ANSWER}}$

$\mathrm{Given~ that}$

$\mathrm{Mass ~of ~CaO,W~=2.8~ g}$

$\mathrm{Moles ~mass~ of~ CaO,M~=~56 ~g/mol}$

∴ $\mathrm{Number ~of ~moles ~of~ CaO,n~}$=

$\dfrac{M}{W}$ = $\dfrac{2.8}{56}$mol

$\mathsf\pink{=~0.05 ~moles}$

∴$\mathrm{Number ~of ~molecules~ ,N~=~n~×~N_A}$

$\mathsf\green{~=~0.05~×~6.022~×~10²³~=~3.011~×10²²molecules}$

$\mathsf\pink{@NehaBTS}$