Complete the table Element/Compound Hydrogen

Question

Complete the table

Element/Compound	Chemical formula	Molecular mass
Hydrogen Oxygen Nitrogen Water Ammonia	H2 O2 N2 H2O NH3	1 + 1 = 2  .......  ....... 1 + 1 + 16 = 18  ........

Calculate the molecular mass of glucose (C₆H₁₂O₆) and sulphuric acid (H₂SO₄)

Answer 1

Element/Compound	Chemical formula	Molecular mass
Hydrogen Oxygen Nitrogen Water Ammonia	H2 O2 N2 H2O NH3	1 + 1 = 2  16 + 16 = 32  14 + 14  = 28 1 + 1 + 16 = 18  14 + 1 + 1 + 1 = 17

Molecular mass of glucose 

= 6 × 12 + 12 × 1 + 6 × 16 = 72 + 12 + 96 = 180 g 

Molecular mass of sulphuric acid 

2 × 1+ 1 × 32 + 4 × 16 = 2 + 32 + 64 = 98 g