Maths Question

Question

The table below show the number of kilograms of crude oil held in reserve in various countries as of 2012. One kilogram of crude oil contains 4.2 x 10^7 joules of energy.

 

 

                                   Oil Reserves

 

Country                                                             Oil (kg)

 

United States                                                      2.7 x 10^10

 

Russia                                                                1.2 x 10^12

 

Canada                                                               2.4 x 10^13

 

Venezuela                                                           4. 1 x 10^15

 

China                                                                  6.8 x 10^9

 

 

 

What is the total amount of energy of Canada's oil reserve.  Express your answer in scientific notation    

Answer 1

(2.4 x 10¹³)(4.2 x 10⁷)

(2.4)(4.2) x 10¹³⁺⁷

6.6 x 10²⁰