Question

litre of hydrogen gas at STP
(Ans. : 0.02 mol)
C. The mass of an atom of hydrogen is
1.008 u. What is the mass of 18 atoms
of hydrogen. (18.144 u)
D. Calculate the number of atom in each
of the following (Given : Atomic mas
of I= 127 u).
a. 254 u of iodine (I)
b. 254 g of iodine (I)
(Ans. : 2 atoms, 1.2044 x 1024 ato
student used a carbon pencil to​

Answer 1

litre of hydrogen gas at STP

(Ans. : 0.02 mol)

C. The mass of an atom of hydrogen is

1.008 u. What is the mass of 18 atoms

of hydrogen. (18.144 u