Question

The approximate no of molecules present in 3g of H2o is.
a) 3×10²³
b) 3×6.01×10²³
c) 1×10²³
d) 2×10²³​

Answer 1

Answer:

$\huge\boxed{\fcolorbox{blue}{orange}{HELLO\:MATE}}$

GIVEN WEIGHT (W) = 3g.

MOLECULAR WT. (M) = 18g.

So, no. of moles =W/M =3/18=1/6.

$\green{\boxed {1mole = 6.01×10^{23}}}$ particles.

Now, 1 mole has 6.01×10²³ particles.

So, 1/6 moles has 1/6×6.01×10²³ particles.

= 1 ×10²³ particles.