Question

Find the mass of:(a) .2 moles of oxygen gas (b) 1.5 moles of water (c) 3 moles of neon

(a) .5 moles of sodium (e) 2 moles of nitrogen element​

Answer 1

Answer:

The mass of 1 mole of oxygen atoms = 16 g

Thus, the mass of 0.2 mole of oxygen atoms = 16 × 0.2 = 3.2 g

b) The mass of 1 mole of water molecules = 18 g

Thus, the mass of 0.5 mole of water molecules = 18 × 0.5 = 9.0 g

Answered By

Answer 2

Answer:

(a)

m = n × M

m = 2 × 32 ( molar mass of oxygen gas O2 )

m = 64 g

(b)

m = n × M

m = 1.5 × 18 ( molar mass of water H2O )

m = 27 g

(c)

m = n × M

m = 3 × 20 ( molar mass of neon Ne )

m = 60 g

(d)

m = n × M

m = 5 × 23 ( molar mass of sodium Na )

m = 115 g

(e)

m = n × M

m = 2 × 14 ( molar mass of nitrogen N )

m = 28 g

HOPE IT HELPS AND PLZ MARK ME AS BRAINLIEST AND FOLLOW ME FOR MORE CORRECT ANSWERS....