Biology, 08.10.2019 23:00 hilby5893

Which of the following is a disadvantage to the coal-to-liquid production of synthetic fuels? a. it requires more coal mining. b. it requires a large potential supply of coal. c. it can be used as fuel for vehicles. d. it removes a lot of pollutants from the coal.

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Answer from: minstcordell4115

The right answer is A. It requires more coal mining.

In order to manufacture synthetic gasoline, the Fischer-Tropsch process involves the catalysis of carbon monoxide and hydrogen to convert them to hydrocarbon. In this chemical process, the most common catalysts are iron, cobalt or ruthenium, as well as nickel, but the latter will tend to form methane CH4 (this is called methanation). The interest of conversion is to produce synthetic crude oil from coal or gas. This process has a very good yield but requires very heavy investments, which makes it economically vulnerable to downward fluctuations in the price of oil.

Answer from: Quest

light dependent reactions:

release oxygen during the photolysis of wateroccur in the granaproduce atp

light independent reactions:

fix carbon dioxide occur in the stromaproduce glucose

hope this !

Answer from: Quest

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

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Which of the following is a disadvantage to the coal-to-liquid production of synthetic fuels? a. it...