Mole concept

Mole calculation I

Find the mass of each of the following

1. 4 moles of aluminium atoms ( Ar Al = 27 )
2. 2 moles of carbon atoms ( C = 12 )
3. 5 moles of magnesium atoms ( Mg = 24 )
4. 10 moles of sodium atoms ( Na = 23 )
5. 0,5 mole silicon atoms ( Si = 28 )
6. 0,1 mole helium atoms ( He = 4 )
7. 0,02 mole carbon atoms ( C = 12 )
8. 0,05 mole silicon atoms ( Si = 28 )

How many moles are in each of the following

1. 36 gr carbon atoms ( Ar C = 12 )
2. 112 gr iron atoms ( Fe = 56 )
3. 60 gr neon atoms ( Ne = 20 )
4. 96 gr copper atoms ( Cu = 64 )
5. 3,5 gr lithium atoms ( Li = 7 )
6. 3 gr carbon atoms ( C = 12 )
7. 0,2 gr helium atoms ( He = 4 )
8. 3,2 gr copper atoms ( Cu = 64 )

What is the mass of one mole of each of the following compounds ?

1. Carbon dioxide ( CO2 ) ( Ar C = 12 ; O = 16 )
2. Silicon dioxide ( SiO2 ) ( Si = 28 ; O = 16 )
3. Methane ( CH4 ) ( C = 12 ; H = 1 )
4. Hydrogen chloride ( HCl ) ( H = 1 ; Cl = 35,5 )
5. Sodium chloride ( NaCl ) ( Na = 23 ; Cl = 35,5 )
6. Aluminium oxide ( Al2O3 ) ( Al =27 ; O = 16 )
7. Ethane ( C2H6 ) ( N = 14 ; H = 1 )
8. Sulphur dioxide ( SO2 ) ( S = 32 ; O = 16 )

What is the mass of one mole of each of the following compounds ?

1. Potassium carbonate ( K2CO3 ) ( K = 39 ; C = 12 ; O = 16 )
2. Sulphuric acid ( H2SO4 ) ( H = 1 ; S = 32 ; O = 16 )
3. Nitric acid (HNO3 ) ( H = 1 ; N = 14 ; O = 16 )
4. Ammonium chloride ( NH4Cl ) ( N = 14 ; H =1 ; Cl = 35,5 )
5. Calcium nitrate ( Ca(NO3)2 ) ( Ca = 40 ; N = 14 ; O = 16 )
6. Ammonium nitrate ( NH4NO3 ) ( N =14 ; H = 1 ; O = 16 )
7. Calcium hydroxide ( Ca)OH)2 ) ( Ca = 40 ; O = 16 ; H = 1 )
8. Aluminium sulphate ( Al2(SO4)3 ( Al = 27 ; S = 32 ; O = 16 )