Essential Chemistry for IGCSE - Chemical Calculations (Section 4 - No. 41)
If 20 g of NaOH (Molar mass = 40 g/mol) is used in a reaction, how many moles are present?
0.5 moles
1.0 moles
2.0 moles
800 moles
Explanation
Moles = 20/40 = 0.5 moles
Comments (0)
