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postnew [5]
3 years ago
14

1. A bacterium that can use NO3 - as a terminal electron acceptor is found to contain sulfur granules. This cell . . . A. reduce

s sulfur B. oxidizes NO3 - C. is a nitrifying bacterium D. is a chemotroph E. cannot produce a PMF directly
Chemistry
1 answer:
Colt1911 [192]3 years ago
5 0

Answer: Option D

Explanation:

Chemotrophs can be defined as the organism which has the ability to get energy by the oxidation of electron donors present in the nearby environments.

These molecules in the environment can be organic or inorganic.These bacteria are usually called as thiobacillus denitrificans.

These bacteria reduce the nitrate into nitrite and the energy source for these bacteria is thiosulfate(sulfur).

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How does maximum boiling azeotropic mixture is separated using fractional distillation?
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Answer:

By heating the mixture to maximum boiling point and then the solution is distilled at a constant temperature without having a change in composition.

Explanation:

An azeotropic mixture is also called a constant boiling mixture and it is a mixture of two or more liquids whose proportions cannot be altered by simple distillation due to the fact that when an azeotropic mixture is boiled, the vapor has the same proportions of constituents as the unboiled mixture.

Now, maximum boiling azeotropic mixture are the solutions with negative deviations that have an intermediate composition  for which the vapor pressure of the solution is minimum and as a result, the boiling point is maximum. At that point, the solution will distill at a constant temperature without having a change in composition.

4 0
2 years ago
What causes an increase in the reaction rate between molecules
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 molecules collide more frequently.

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3 years ago
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a solution contains water (h20), hydrochloric acid and a wire of magnesium (mg). It takes about 60 seconds for the chemical reac
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The reaction should go faster
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3 years ago
In a pressure cooker, a lid is screwed tightly onto a pot so that the air pressure in the pot is increased. What effect, if any,
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A liquid boils when it's vapor pressure will be equal to the atmospheric pressure. With the lid on, increases the pressure inside the pot. As an effect, it would take a higher temperature to reach the boiling temperature. 

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Hello can anyone help?
e-lub [12.9K]

Answer:

A ) 1, 2 and 3

Explanation:

1 ) is correct because,

K donates 1 electron

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2 ) is correct because,

K + F -----> KF

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2 years ago
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