Question

Which has the greatest mass? 1 mole Ca 1 mole CO 1 mole O2 1 mole CH4 1 mole NO

Answer 1

Answer: 1 mole of
`Ca` has the greatest mass.

Step-by-step explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP , contains avogadro's number
`(6.023* 10^(23))` of particles and weighs equal to the molecular mass of the substance.

1 mole of
`Ca` has a mass of 40 g.

1 mole of
`CO` has a mass of 28 g

1 mole of
`O_2` has a mass of 32 g

1 mole of
`CH_4` has a mass of 16 g.

1 mole of
`NO` has a mass of 30 g.

Thus the greatest mass is of 1 mole of
`Ca`