Question

Question 3 (1 point) Consider the following chemical equation. C3H8 + 502 --> 3002 + 4H20 The reactants are O C3H8 only CO2 only O CO2 and H20 C3Hg and O2 Question 4 (1 point) From the list below select the coefficients that balance the Mg +___02 --> Mgo

Answer 1

the equation is as follows

C₃H₈ + 5 O₂ ------------------> 3 CO₂ + 4 H₂O

here the reaction is propane combustion reaction and the propane reacts with oxygen forms the CO2 and H2O

the reactants are C₃H₈ , O₂

answer => C₃H₈ and O₂

the equation is as follows

Mg + O₂ -------------> MgO

on reactant side => Mg = 1 , O = 2

on product side => Mg = 1 , O = 1

so balance the equation with smallest possible coefficients as follows

2 Mg + O₂ -------------> 2 MgO

answers => coefficients are = 2 , 1 , 2