1) The estimated proven world oil reserves in 2009 were 1342 billion barrels. Th
ID: 849108 • Letter: 1
Question
1) The estimated proven world oil reserves in 2009 were 1342 billion barrels. The world annual rate of use was 31.1 billion barrels. How long will these reserves last if this rate of use continues? (The rate of use is actually likely to increase.)
Express your answer with the appropriate units.
2) The estimated world natural gas reserves in 2009 were 6254 trillion ft3. The world annual rate of use was 103.8 trillion ft3. How long will these reserves last if this rate of use continues?
Express your answer to four significant figures and include the appropriate units.
Explanation / Answer
1) oil reserves
2009 were 1342 billion barrels
world using -----31.1 billion barrels/year
no of years = 1342 billion barrels/(31.1 billion barrels/year)
= 43,15 years with the same rate of consumption
2) natural gas reserves----6254 trillion ft3
world using ---103.8 trillion ft3/year
no of years= -6254 trillion ft3/(103.8 trillion ft3/year)
= 60.25 years with same rate of consumption
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.