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Question 5: CO 2 comprises 0.05 percent (1/20 of 1 %) by weight of the atmosphere (see table 1). What is the weight of CO 2 in tonnes in the
Question 5: CO2 comprises 0.05 percent (1/20 of 1 %) by weight of the atmosphere (see table 1). What is the weight of CO2 in tonnes in the atmosphere?
Answer:
Weight of CO2 = 0.005 tonnes / M2
Explanation:
Weight of the atmosphere = 1kg/cm2
Weight of atmosphere per square meter = 10000cm2 * 1kg
= 10000kg/M2
weight of atmosphere in tonnes = 10000kg/1000kg
= 10 tonnes
of this 0.05% is CO2, therefore,
weight of CO2 = (0.05/100) * 10
= 0.005 tonnes / M2
Question 6: World CO2 emission from deforestation and burning of fossil fuel exceeds 7.7 billion tonnes per year and is increasing. What percentage of the total amount of CO2 in the atmosphere (calculated in Question 5) is 7.7 billion (7.7 X 109) tonnes.
Answer: