Question

Calculate the mass in gram.

(a)1 gram atom of oxygen.
(b)2 gram molecule of helium.​

Answer 1

Answer:(a)Oxygen's atomic weight is 16.00 amu.

(b) 4 amu

Explanation:

Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? Molar mass (in grams) is always equal to the atomic weight of the atom