Question

Which of the following has the highest mass
(1) 20 g of sulphur
(2) 4 mol of carbon dioxide
(3) 12 x 10²4 atoms of hydrogen
(4) 11.2 L of helium at NTP​

Answer 1

Answer:

1 g of atom of c

Explanation:

Correct option is

A

1 g  atom of C

(A) 1 g of atom of C corresponds to 12 g.

(B)

2

1

mole of methane corresponds to

2

1

×16=8g

(C) 10 ml of water corresponds to 10 g as the density is 1 g/mL.

(D) 3.011×10

23

atoms of oxygen corresponds to 0.5 moles or 8 g as 1 mole of any substance contains

6.023×10

2

and atomic mass of oxygen is 16 g/mol.

Thus, 1 g of atom of C has highest mass.