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2 years ago

Describe the composition of humus and why it is an effective organic fertilizer.

Chemistry

1 answer:

asambeis [7]2 years ago

5 0

Answer:

Humus, which ranges in colour from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur. As humus decomposes, its components are changed into forms usable by plants.

samira-

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10. What is the number one cause of habitat loss??

mr Goodwill [35]

Answer:

C) Modernization of humans

4 0

2 years ago

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The pressure inside a gas cylinder is 3,506 mmHg ,how many atmospheres of pressure is the gas exerting on the cylinder

Lorico [155]

Below are the choices:

a)0.2168 atm

b)4.613 atm

c)34.60 atm

d467.4 atm

B is correct answer.

4 0

3 years ago

Read 2 more answers

1. Sulfuric acid is formed when sulfur dioxide gas reacts with oxygen gas and water. Write a balanced chemical equation for the

tekilochka [14]

Answer:

1. Balanced chemical for the given chemical reaction is :

$2SO_2(g) +O_2(g) +2H_2O(l) \rightarrow 2H_2SO_4(aq)$

number of mole of sulphuric acid produced = 12.5 mol

number of mole of oxygen required=6.25 mol

Explanation:

1. Balanced chemical for the given chemical reaction is :

$2SO_2(g) +O_2(g) +2H_2O(l) \rightarrow 2H_2SO_4(aq)$

from above balanced equation it is clearly that ,

2 mole of sulpher dioxide gives 2 mole of sulphuric acid

1 mole of sulpher dioxide gives 1 mole of sulphuric acid

therefore,

12 .5 mole of sulpher dioxide will givs 12.5 mole of sulphuric acid

number of mole of sulphuric acid produced = 12.5 mol

2 mole of sulphur dioxide needs 1 mole of oxygen gas

so,

1 mole of sulphur dioxide needs 0.5 mole of oxygen gas

therefore 12.5 of sulphur dioxide needs $12.5 \times 0.5$ mole of oxygen

number of mole of oxygen required=6.25 mol

4 0

3 years ago

How many kilojoules are required to convert 115.0 g of ice at 0.0 ∘c to liquid water at 32 ∘c? the heat of fusion of water is 33

Ivanshal [37]

The answer is 53.8 kJ.
Solution:There are two major steps in converting ice to liquid water. It begins with a phase change when ice melts at 0.0°C, and then a temperature change when the liquid water rises in temperature from zero to 32°C.
The amount of heat involved with the phase change melting is given by
q = (mass of water) (ΔHfus)
= (115.0 g)(334 J/g)
= 38410 J = 38.41 kJ
The amount of heat involved with temperature change is
q = mcΔT
= (115.0g)(4.184J/g°C)(32°C - 0.0°C)
= 15397.12 J = 15.39712 kJ
Summing up the two values gives the total heat required to convert ice to liquid water:
q = 38.41 kJ + 15.39712 kJ= 53.8 kJ

3 0

2 years ago

A laser pointer emits light that has a wavelength of 5.32x 10–7 m. What is the frequency of the light?

butalik [34]

Answer:

Frequency = 0.6 × 10¹⁵ s⁻¹

Explanation:

Given data:

Wavelength = 5.32 × 10⁻⁷ m

Frequency = ?

Solution:

Formula:

speed of light = wavelength × frequency

Frequency = speed of light / wavelength

Frequency = 3 × 10⁸ m/s / 5.32 × 10⁻⁷ m

Frequency = 0.6 × 10¹⁵ s⁻¹

8 0

3 years ago