JEE Main Chemistry question
1.0 g of hydrogen contains atoms. The atomic weight of helium is 4. It follows that the number of atoms in 1 g of He is:
Answer: (A)
Solution
1 g He mol (atomic weight 4), so the number of atoms .
1.0 g of hydrogen contains atoms. The atomic weight of helium is 4. It follows that the number of atoms in 1 g of He is:
1 g He mol (atomic weight 4), so the number of atoms .