moles

How many moles of aluminium ions are in 0.30 moles aluminium oxide?

• 0.23

• 0.60

• 0.54

• 0.41

One mole of a substance contains the same number of particles as..

• 1/12 g C12

• 1 g C 12

• 12 g C12

• 12 g C 13

What is the molar mass of ammonia

• 34 g

• 17 g

• 17 kg

• 34 kg

What is the correct way to calculate no of moles?

• m = M/n

• M = m/n

• n = M/m

• n = m/M

How many moles are there in 2g helium?

• 0.5

• 1

• 0.25

• 0.75

Which formula gives the simplest ratio of atoms of elements?

• empirical

• molecular

• stereochemical

• structural

state volume of 3 moles of ammonia at rtp.

• 24 dm3

• 48 dm3

• 24000 dm3

• 72 dm3

what is the volume of 22 g CO2?

• 24 dm3

• 12 dm3

• 48 dm3

• 72 dm3

How much volume of CO2 gas will be produced by reacting 10 g marble with hydrochloric acid?

• 2.4 g

• 8.4 g

• 4.4 g

• 1.4 g

How many moles are present in 60000 cm3 of H2?

• 500

• 2500

• 0.5

• 2.5