Unbalanced Equation

Question 1

Given the unbalanced equation: CH4 + O2 ® CO2 + H2O.

When properly balanced, the sum of the balancing coefficients is

a.6

b.8

c.10

d.12

Question 2

The reaction: CH4 + 2O2 ® CO2 + 2H2O releases heat, is it

a.endothermic.

b.exothermic.

c.isothermic.

d.protothermic.

Question 3

The reaction: N2 + O2 ® 2NO absorbs  heat, is it

a.endothermic.

b.exothermic.

c.isothermic.

d.protothermic.     

Question 4

Natural gas is primarily composed of

a.butane.

b.propane.

c.octane.

d.methane.

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