Question

calculate the number of gram atom and gram molecules in 25.4of iodine 12(atomic mass of i is 127​

Answer 1

Answer:

Explanation:

1. A gram atom and a gram molecule are termed as a mole of atom and am mole of molecules respectively.

2. For e.g 1 gram atom of oxygen is 1 mole of O and 1 gram molecule of oxygen is 1 mole of O2.

3. In iodine,

      Number of moles of I in 25.4 mg of I = 25.4126.9=0.2

Similarly for I2 = 0.1 m moles.

4. So, 25.4 mg of iodine has 0.2 mmoles of I and 0.1 mmoles of I2.