What is coefficientof Ixgen in the balanced reason: _ _ C2H4 + _ _ O2 --> _ _ CO2 + _ _ H2O

The coefficient for Oxygen in the balanced reaction : 3

Given

Reaction

C₂H₄ + _ _ O₂ ⇒ _ _ CO₂ + _ _ H₂O

Required

Oxygen coefficient

Solution

C₂H₄ + aO₂ ⇒ bCO₂ + cH₂O

C, left=2, right=b⇒b=2

H, left=4, right=2c⇒2c=4⇒c=2

O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.2+2⇒2a=6⇒a=3

The equation becomes :

C₂H₄ + 3O₂ ⇒ 2CO₂ + 2H₂O

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3