Answer:
Explanation:
Molar mass:
Molar mass of substance is sum of atomic weight of all the atoms of elements present in it.
HCl
Atomic weight of hydrogen = 1.008 amu
Atomic weight of chlorine = 35.5 amu
Atomic weight of HCl = 1.008+ 35.5 = 36.508 g/mol
K₂CO₃:
Atomic weight of potassium = 39.0893 × 2 = 78.1786 amu
Atomic weight of carbon = 12 amu
Atomic weight of oxygen = 16×3 = 48 amu
Atomic weight of K₂CO₃ = 48+12+ 78.1786 = 138.178 g/mol
Ca(OH)₂:
Atomic weight of calcium = 40 amu
Atomic weight of oxygen = 16× 2 amu = 32 amu
Atomic weight of hydrogen = 1.008× 2 = 2.016 amu
Atomic weight of Ca(OH)₂ = 74.016 g/mol
Na₃PO₄:
Atomic weight of sodium = 23×3= 69 amu
Atomic weight of phosphorus = 31 amu
Atomic weight of oxygen = 16 × 4 = 64 amu
Atomic weight of Na₃PO₄= 69+31+64 = 164 g/mol
