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3 years ago

Where can fire might be used as a management tool ?

Chemistry

1 answer:

lions [1.4K]3 years ago

8 0

Natural vegetation!!

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Which of the following is a unit of volume of solids?

Anika [276]

Answer:

<h3>,,,,,,Cubic meters ,,,</h3><h3 />

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3 years ago

The measurement of how much mass is contained in a given volume is called what?

Ira Lisetskai [31]

<span> The formula for </span>measuring<span> density is Density = </span>Mass/Volume<span>, or D=M/V. The / means “per” or “for each,” which in math is the same as “divided by.”</span>

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3 years ago

A bag of fertilizer is labeled 10-20-20. What is the actual percentage of phosphorus in the fertilizer?

aleksandr82 [10.1K]

Answer:

20% of phosphorus

Explanation:

A fertilizer is used to improve the fertility of soils. Most fertilizers contains the element nitrogen, phosphorus and potassium.

They are often designated NPK fertilizers.

Now we know that the numbers 10-20-20 depicts the nitrogen-phosphorus and potassium content of the fertilizer.

From the designation,

The actual percentage is 20% of phosphorus.

10% of nitrogen

20% of potassium

8 0

3 years ago

Strigol is an important plant hormone that is released by crops such as rice and sugarcane. Unfortunately for these plants, stri

Len [333]

The hydrogen deficiency index( HDI) of strigol is = 10

<h3>How to calculate HDI:</h3>

The hydrogen deficiency index is used to measure the number of degree of unsaturation of an organic compound.

Strigol is an example of an organic compound because it contains carbons and hydrogen.

To calculate the HDI using the molecular formula given (C19H20O6) the formula for HDI is used which is:

$hdi = \frac{1}{2} (2c + 2 + n - h - x)$

where C = number of carbon atoms = 19

n= number of nitrogen atoms = 0

h= number of hydrogen atoms = 20

X = number of halogen atoms = 0

Note that oxygen was not considered because it forms two bonds and has no impact.

There for HDI =

$\frac{1}{2} (2 \times 19 + 2 + 0 - 20 - 0)$

HDI=

$\frac{1}{2} (40 - 20)$

HDI =

$\frac{1}{2} \times 20$

HDI = 10

Therefore, the hydrogen deficiency index of strigol is = 10

Learn more about unsaturated compounds here:

brainly.com/question/490531

7 0

3 years ago

if an element [x] contains 8 protons, 8 neutrons and 8 electrons, the atomic number of the element is ?

Kaylis [27]

Answer:

Explanation:

The atomic number refers to the number which identifies the element, which is the proton number.

7 0

3 years ago