be 311 million people, calculated the number of metric tons of garbage thrown aw

Question

be 311 million people, calculated the number of metric tons of garbage thrown away in the i (1 metric ton (t)-1000 kg, assume 365 days in a year) 4. If the average American throws away 4.5 lb of trash cach day, and the population of the tis. 5. A hectacre (1.0000 x 10 m') is a metric unit of area analogous to an acre. How many square feet are in a 5.0 hectare farm? 6. The Deepwater Horizon oil spill released approx. 35000 barrels of crude oil per day into the Gulf of Mexico for 87 days. An oil barrel is defined as 42 gal. a. Calculate the rate of crude oil released in Lhour.(Assume 24 hr in one day.) b. A case of water at a local "warehouse store" contains forty (40) 500. mL bottles. The total volume of the Deepwater Horizon oil spill was equivalent to how many cases of water? 7. It requires 1200 kg of coal to produce the energy needed to make 1.0 kg of aluminum metal. If a single soda can requires approx. 15 g of Al, what mass of coal would be needed to produce a six-pack of cans?

Explanation / Answer

Solution (4): 1 lb= 0.45359Kg

average trash thrown = 4.5lb/day = 4.5* 0.45359 =2.0411Kg/day

There are 3 million people inUS so net trash thrown per day = 3000000 * 2.0411= 6123497.4Kg trash per day

Total trash thrown per year= 6123497.4* 365= 2235076551Kg per year

In metric ton the total trash thrown = 2235076551/ 1000= 2235076.551 metric ton trash thrown per year

Solution(5): 5 hectacre= 5* 104 m2

1 meter = 3.28084 feet

So ! meter2 = 3.280842 feet2= 10.7639 feet2

Similarily in 5* 104 m2 =5* 104 * 10.7639 feet2 = 538195.55 feet2

Solution(6): 1 barrel = 42 gallon

35000barrel = 42* 35000 gallon= 1470000 gallon

also we know 1 gallon = 3.78541 litre

hence   1470000 gallon= 1470000 * 3.78541 litre= 5564555.322 litre

So oil released per day= 1470000 gallon= 5564555.322 litre

(a) we know1 day = 24 hours

then in 1 hour oil released will be 5564555.322/ 24 = 231856.47litre per hour

(b): volume of 1 case= 40*500ml= 20 litres

deepwater horizon releases 5564555.322 litres per day

So oil release in 87 days = 5564555.322* 87 =484116313.014 litres

number of cases = oil release in 87 days /  volume of 1 case

= 484116313.014 / 20

= 24205815.6507 (approx. 24205816 cases)

Solution(7): energy of 1200 kg coal is needed to produce ! Kg Aluminium metal

! soda can reuires 15 g (0.015 Kg) Aluminium

Auminium requirement if 6 cans = 6* 0.015 kg =0.09Kg

So the coal required to produce 0.09Kg Aluminium = 1200* 0.09 = 108Kg

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