Question

 1. How many ATOMS of carbon are present in 4.55 moles of carbon monoxide ? 

 2. How many MOLES of oxygen are present in 7.46x10" molecules of carbon monoxide ? 

Answer 1

PART 1:

No.of moles of Carbon atoms in carbon monoxide = 4.55 mol

Hence, No.of atoms of carbon = (4.55 mol) x (6.022 x 10²³)

• No.of atoms of carbon = 2.74 x 10²⁴ atoms

-------------------------------------------------------------------------------------

PART 2:

1 mole of oxygen = 6.022 x 10²³ atoms

No.of moles of oxygen = (7.46 x 10²²) / (6.022 x 10²³) moles

• No.of moles of oxygen = 0.1239 moles