Question

Consider the following statements:
I. 20g Ca has 3.01x10Ca atoms
II. 1.8g water has 6.02 x10” water molecules
IIL 23.8g U has 6.02x10" U atoms
IV. 35.5g Cl has 6.02x10” CI ions
Which of the above statement incorrect:
A) I only
C) III and IV
B) II only
D) I, II, III and IV
​

Answer 1

The actual answers are:

20 g of Ca has 3.01 x 10²³ atoms

1.8 g of water has 6.02 x 10²² molecules

23.8 g of U has 6.02 x 10²² atoms

35.5 g of Cl⁻ has 6.022 x 10²³ ions

Just look which of the following figures don't match, and then choose your correct option

I'm sorry, but your question is a bit incomplete

Cheers