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 = 1.00 amu
Atomic weight of chlorine = 35.45 amu
Atomic weight of HCl = 1.00+35.45 = 36.45 g/mol
K₂SO4:
Atomic weight of potassium = 39.09× 2 = 78.18 amu
Atomic weight of sulfur = 32.07 amu
Atomic weight of oxygen = 15.99×4 = 63.96 amu
Atomic weight of K₂SO4 = 63.96+32.07+ 78.18 = 174.21 g/mol
Ca(OH)₂:
Atomic weight of calcium = 40.08 amu
Atomic weight of oxygen = 15.99 × 2 amu = 31.98 amu
Atomic weight of hydrogen = 1.00 × 2 = 2.00 amu
Atomic weight of Ca(OH)₂ = 74.06 g/mol
NaOH:
Atomic weight of sodium = 22.99 amu
Atomic weight of oxygen = 15.99 amu
Atomic weight of hydrogen = 1.00 amu
Atomic weight of NaOH = 39.98 g/mol
NO₃:
Atomic weight of nitrogen = 14.01 amu
Atomic weight of oxygen = 15.99×3 = 47.97 amu
Atomic weight of NO₃ = 61.98 g/mol
