Question

Find the mass of 2 moles of:

1. Oxygen atoms

2. Oxygen molecules

Answer 1

Answer: 1. 2 moles of oxygen atoms = 32 grams

2. 2 moles of oxygen molecules = 64 grams

Step-by-step explanation:

According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number of particles.

1 mole of oxygen atom (O) weighs = 16 g

Thus 2 moles of oxygen atom (O) weighs =
`(16)/(1)* 2=32 g`

Also 1 mole of oxygen molecule
`(O_2)` weigh = 32 g

Thus 2 moles of oxygen molecule
`(O_2)` =
`(32)/(1)* 2=64 g`