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3 years ago

HELP PLEASE WILL GIVE BRAINLIEST , the dark portion of the soil created by the decay of organic matters? is called?

Chemistry

2 answers:

NemiM [27]3 years ago

7 0

Answer is: humus.

Humus is the dark organic matter that forms in soil when dead plant and animal matter decays.

Microorganisms decompose the soil organic matter into inorganic minerals that the roots can absorb.

Humus can hold a lot of moisture (approximately 80–90% of its weight) and its dark color helps to warm cold soils.

natita [175]3 years ago

4 0

The answer is; Humus

Humus is found in the topmost layer of the soil where there is decomposing organic matter. This layer of soil has a characteristic color of dark brown to black. This layer of soil also teems with microbial activity and organisms such as earthworms, fungi, and arthropods which are significant in the decomposition of the dead organic matter.

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if the theoretical yield of a reaction is 26.0 grams and you actually recovered 22.0 grams what is the precent yield

netineya [11]

Percentage Yield = (Actual Yield ÷ Theoretical Yield) × 100

∴ if theoretical yield is 26 g, but only 22.0 is recovered from the reaction,
then Percentage Yield = (22 g ÷ 26 g) × 100
= 84.6 %

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3 years ago

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Setler79 [48]

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3 years ago

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Brut [27]

Answer:

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2 years ago

2. _____ is the distance and direction of an object’s change in position from the starting a. Speed b. Displacement c. Ve

Llana [10]

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2 years ago

How many chlorine atoms are there in 12.2 g of ccl4? How many chlorine atoms are there in 12.2 of ? 4.77×1022 atoms?

mash [69]

Answer:- $1.91*10^2^3Cl$ atoms.

Solution:- We have been given the grams of carbon tetrachloride and asked to calculate the number of atoms of chlorine. It is a three step conversion problem. In the first we convert the grams of carbon tetrachloride to moles of it. In second step we convert moles of carbon tetrachloride to moles of chlorine and in the third step we convert the moles of chlorine to atoms of chlorine.

For grams to mole conversion we need the molar mass of the compound. Molar mass of carbon tetrachloride is 153.82 grams per mol. If we look at the formula of carbon tetrachloride then four chlorine are present in it. It means 1 mol of carbon tetrachloride has four moles of chlorine. The calculations are as follows:

$12.2gCCl_4(\frac{1molCCl_4}{153.82gCCl_4})(\frac{4molCl}{1molCCl_4})(\frac{6.02*10^2^3Clatoms}{1molCl})$

= $1.91*10^2^3Cl$ atoms

So, there are $1.91*10^2^3Cl$ atoms in 12.2 grams of $CCl_4$ .

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3 years ago

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