Question

Calculate the following in 32 g of ozone [03]:

a) The number of gram - atoms of oxygen,

b) The number of atoms of oxygen.

c) The number of molecules of ozone​

Answer 1

Answer:

512 g

Explanation:

because O3 is oxygen

Answer 2

Given: 32g of O₃

To Find:

a) The number of gram-atoms of oxygen

b) the number of atoms of oxygen = N

c) the number of molecules of O₃ = N'

Solution:

Formula used:

• number of gram-atoms = number of moles (n) × atomicity (number of O present in ozone molecule)

• n = given mass (m)/Molecular mass (M), where M of ozone = 3 × 16 = 48g

• Number of atoms (N) = n × Nₐ × atomicity of ozone(Nₐ = Avagadro number = 6.023 × 10²³)

• Number of molecules = n × Nₐ

Calculating the number of moles of O₃, using the above formula:

n = m/M

n = 32/48

n = 0.67 moles

a) Applying the above formula to calculate the n number of gram-atoms of oxygen

number of gram - atoms of oxygen = n × atomicity

                                                            = 0.67 × 3

                                                            = 2 gram atoms of O

b) Calculating the number of atoms of O:

N = n × Nₐ × atomicity

N = 0.67 × 6.023 × 10²³ × 3

N = 12.12 × 10²³ atoms of Oxygen

c) Applying the above formula to calculate the number of molecules of ozone​ - N:

N' = n × Nₐ

N' = 0.67 × 6.023 × 10²³

N' = 4.04 × 10²³ molecules of ozone (O₃)