Question

1. One mole of oxygen gas (O2) molecules has fewer atoms than one mole of ozone gas (O3) molecules ( True or false)

2. One molecule of oxygen gas (O2) has fewer atoms than one mole of ozone gas (O3) (True or false)

Answer 1

1) One mole of oxygen gas ( O ₂ ) molecules has fewer atoms than one mole of ozone gas ( O ₃ ) molecules.

ANSWER : TRUE

We know that, according to Avogadro's law, one mole of compound contain 6.022 10 ²³ molecules.

i e 1 mole oxygen gas contain 6.022 10 ²³ molecules.

1 O ₂ molecule contain 2 O atoms.

Therefore, No. of O atoms in 1 mole Oxygen gas = 2 ( 6.022 10 ²³ )

1 mole ozone gas contain 6.022 10 ²³ molecules.

1 O ₃ molecule contain 3 O atoms.

Hence, No. of O atoms in 1 mole Ozone gas = 3 ( 6.022 10 ²³ )  

From above calculations it is clear that given statement is true.

2) One molecule of oxygen gas has fewer atoms than one mole of ozone gas.

ANSWER : TRUE

In one oxygen molecule , there are only two oxygen atoms where as   1 mole ozone gas contain 3 ( 6.022 10 ²³ ) Oxygen atoms.

Hence, given statement is true.