Question

(I) Sodium is represented as 11 Na23
(a) What is its atomic mass?
(b) Write its gram atomic mass.
(c) How many atoms of Na will be there in 11.5 g of the sample?
(II) Calculate the molar mass of the following substances:
(a) Ethyne,C2H2
(b) Sulphur molecule, Sg​

Answer 1

Answer:

1) 23 u

2) 23 gm

3) 1/2 atom

4) 252 u