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geniusboy [140]
3 years ago
13

Nitrogen-fixing bacteria live in protective nodules (bumps) on the roots of some plants. These bacteria are able to convert gase

ous nitrogen from the air into a form of nitrogen that the plants can use. Which type of relationship is this?
A. mutualism
B. predation
C. commensalism
D. parasitism

i think it is a or b
Chemistry
2 answers:
Vsevolod [243]3 years ago
3 0
I believe it is A because the plant is offering protection while the bacteria is converting it in to nitrogen that the plant can use!
ankoles [38]3 years ago
3 0

Answer:

A

Explanation:

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You are provided with a compound fertilizer, 40-15-10.Calculate the quantity of fertilizer to add to a one hectare field supply
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Answer:

a. 300 Kg of fertilizer

b. 225 Kg of fertilizer

c. 400 Kg of fertilizer

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Explanation:

The percentage composition ratio of Nitrogen, Phosphorus and Potassium in a 1 Kg bag of the given fertilizer is 40:15:10.

Therefore a  1 Kg bag contains;

40/100 * 1 Kg = 0.4 Kg of Nitrogen;

15/100 * 1 Kg = 0.15 Kg of phosphorus;

10/100 * 1 Kg = 0.1 Kg of potassium

Quantity of fertilizer required to add to a hectare to supply;

a. Nitrogen at 120 kg/ha = 120/0.4 = 300 Kg of fertilizer

b.. Nitrogen at 90 Kg/ha = 90/0.4 = 225 Kg of fertilizer

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8 0
3 years ago
Given 8.25 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate would be synthesized, assuming a complete 100
mash [69]

Answer:

              10.87 g of Ethyl Butyrate

Solution:

The Balance Chemical Equation is as follow,

   H₃C-CH₂-CH₂-COOH + H₃C-CH₂-OH  →  H₃C-CH₂-CH₂-COO-CH₂-CH₃ + H₂O

According to equation,

    88.11 g (1 mol) Butanoic Acid produces  =  116.16 g (1 mol) Ethyl Butyrate

So,

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Solving for X,

                      X =  (8.25 g × 116.16 g) ÷ 88.11 g

                      X =  10.87 g of Ethyl Butyrate

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