Question

(i) 8 g O, molecules (number of molecules from mass) with cutting and photo​

Answer 1

Step-by-step explanation:

The number of molecules =

("given mass")/("molar mass") xx

Avogadro number <br>

implies N = (m)/(M) xx N_(0)

<br> Atomic mass of oxygen = 16 u <br>

therefore

Molar mass of

O_(2)

molecules =

16 xx 2 = 32

g <br>

implies N = (8)/(32) xx 6 *022 xx 10^(23)

<br>

= 1*51 xx 10^(23)