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3 years ago

Why is soil conversation important

Chemistry

1 answer:

Vinvika [58]3 years ago

4 0

Answer:

Soil conservation is important because soil is crucial for many aspects of human life as it provides food, filters air and water and helps to decompose biological waste into nutrients for new plant life. Soil can be drained away or contaminated, destroying it for use. Soil conversation involves working to reduce contamination and depletion.

Explanation:

hope this helps, pls mark brainliest :D

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Please help will mark brainliest. there are four questions and a formula

fomenos

Explanation:

1=2 atoms

2=4-n where n is the number of bonds to that carbon

3=10

4=2

7 0

4 years ago

Devices that mix air or oxygen with flammable gasses cannot be used unless approved by

Feliz [49]

Flammable gases are gases that have the tendency to explode (burst into flames) when they come in contact with the appropriate quantities of air, oxygen, or any suitable oxidant.

Devices that mix air or oxygen with flammable gasses cannot be used unless approved by an authorized or approved personnel.

Examples of flammable gases are hydrocarbons such as Propane, Acetylene, e.t.c.

Flammable gases are dangerous to humans and the environment and if they are not handled properly, can cause severe damages and even death.

During the preparation and usage of flammable gases, safety precautions should be properly enforced such as the wearing of appropriate safety gear and goggles.

Devices that mix air or oxygen with flammable gases cannot be used unless approved by an authorized or approved personnel.

To learn more, visit the link below:

brainly.com/question/3702349

8 0

3 years ago

What is the wavelength of an electromagnetic wave that travels at 3 × 108 m/s and has a frequency of 60 MHz? (1 MHz = 1,000,000

VikaD [51]

Answer: 5m

Explanation:

Given that:

Wavelength (λ)= ?

Frequency of wave (F) = 60MHz

[If 1 MHz = 1,000,000 Hz

60MHz = 60 x 1,000,000 = 6 x 10^7Hz]

Speed of wave (V) = 3 x 10^8 m/s

The wavelength is the distance covered by the wave in one complete cycle. It is measured in metres, and represented by the symbol λ.

So, apply the formula V = F λ

Make λ the subject formula

λ = V/ F

λ = 3 x 10^8 m/s / 6 x 10^7Hz

λ = 5m

Thus, the wavelength of an electromagnetic wave is 5 metres.

8 0

3 years ago

If 18 grams of carbon react with oxygen to produce carbon dioxide how many molecules of oxygen would be required?

Maksim231197 [3]

9.0 x 10 to the power of 23 molecules

8 0

3 years ago

A certain first-order reaction has a rate constant of 2.15×10−2 s−1 at 20 ∘C. What is the value of k at 55 ∘C if Ea = 72.0 kJ/mo

adell [148]

Answer:

$k_2=0.504s^{-1}$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to calculate the rate constant at 55 °C by using the temperature-variable version of the Arrhenius equation:

$ln(\frac{k_2}{k_1} )=-\frac{Ea}{R}(\frac{1}{T_2} -\frac{1}{T_1} )$

Thus, we plug in the temperatures, activation energy and universal constant of gases in consistent units to obtain:

$ln(\frac{k_2}{0.0215s^{-1}} )=-\frac{72000\frac{J}{mol}}{8.3145\frac{J}{mol*K}}(\frac{1}{55+273} -\frac{1}{20+273} ) \\\\ln(\frac{k_2}{0.0215s^{-1}} )=3.154\\\\k_2=0.0215s^{-1}exp(3.154)\\\\k_2=0.504s^{-1}$

Regards!

3 0

3 years ago