Question

Find the total number of H. S and 'O' atoms in the following: (a) 196 g H2SO4 (b) 196 amu H2SO4 (c) 5 mole H2S2O3 (d) 3 molecules H2S206.​

Answer 1

In (a) and (b), 196 g H2SO4 and 196 amu H2SO4 both contain: 4 moles of H, 1 mole of S, and 4 moles of O. In (c), 5 moles H2S2O3 contain: 10 moles of H, 1 mole of S, and 6 moles of O. In (d), 3 molecules H2S206 contain: 12 moles of H, 1 mole of S, and 6 moles of O.

Step-by-step explanation:

(a) 196 g H2SO4 contains:

- 4 moles of H (8 H atoms)

- 1 mole of S

- 4 moles of O (8 O atoms)

(b) 196 amu H2SO4 contains:

- 4 moles of H (8 H atoms)

- 1 mole of S

- 4 moles of O (8 O atoms)

(c) 5 moles H2S2O3 contains:

- 10 moles of H (20 H atoms)

- 1 mole of S (1 S atom)

- 6 moles of O (12 O atoms)

(d) 3 molecules H2S206 contains:

- 12 moles of H (24 H atoms)

- 1 mole of S (1 S atom)

- 6 moles of O (12 O atoms)

Answer 2

To find the number of H, S, and O atoms in compounds, determine the molar mass and use the mole concept. For example, 196 g of H2SO4 contains 2 moles of H, 1 mole of S, and 4 moles of O atoms.

Step-by-step explanation:

In order to find the number of H, S, and O atoms in various compounds, we need to determine the molar mass of each compound and then use the mole concept to calculate the number of atoms.

(a) For 196 g of H2SO4, the molar mass of H2SO4 is 98 g/mol. So, there are 2 moles of H atoms, 1 mole of S atoms, and 4 moles of O atoms in 196 g of H2SO4.

(b) For 196 amu of H2SO4, the molar mass of H2SO4 is approximately 98 amu/mol. So, there are 2 moles of H atoms, 1 mole of S atoms, and 4 moles of O atoms in 196 amu of H2SO4.

(c) For 5 moles of H2S2O3, there are 10 moles of H atoms, 5 moles of S atoms, and 10 moles of O atoms.

(d) For 3 molecules of H2S206, there are 6 moles of H atoms, 3 moles of S atoms, and 18 moles of O atoms.