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Dmitriy789 [7]
4 years ago
10

How does the magnetic field surrounding earth benefit humankind

Chemistry
2 answers:
skad [1K]4 years ago
8 0

The magnetic field surrounding earth benefits humankind by providing a protective sheet around earth.

it prevents the entry of harmful rays, radioactive particles, to reach earth

It prevents the harmful rays and particles thus also shields the ozone layer which is the protective layer of our earth crust.

Correct answer:

C it protects us from radioactive particles

Xelga [282]4 years ago
5 0
C, it prevents the Earth from ultraviolet radiation and other harmful substances from space
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Ammonia (NH3) can be produced by the reaction of hydrogen gas with nitrogen gas:
VARVARA [1.3K]

Answer:

Percent yield = 61.5%

Explanation:

Given data:

Moles of hydrogen = 2.00 mol

Actual yield of ammonia= 0.80 mol

Percent yield = ?

Solution:

Chemical equation:

3H₂ + N₂ → 2NH₃

Now we will compare the moles of ammonia with hydrogen from balance chemical equation:

                     H₂       :       NH₃

                      3        :         2

                      2        :       2/3×2 = 1.3 mol

Percent yield:

Percent yield = Actual yield / theoretical yield × 100

Percent yield = 0.80 mol /1.3 mol × 100

Percent yield = 0.615 × 100

Percent yield = 61.5%

6 0
3 years ago
3.
Alecsey [184]

Answer:

<h3>no it is not allowed</h3>

Explanation:

<h3>Liwis structure shows the elements symbol with dots thet represents valance electrons ; in second row elements their atomic number is 3 up to 10 , from Li up to Ne from their electron configuration their valance electron will be from 1 up to 8 respectivelly ,if lewis structure represents the element with it is symbol and dots that represents valance electron the second row elements cannot have more than an octet of valance electrons surrounding it.</h3>

<h3>I think it is help ful for you </h3>
3 0
3 years ago
How does a rock’s mass change when it goes through the rock cycle?
JulijaS [17]

The rock cycle is the process of converting rock between igneous, sedimentary, and metamorphic forms. ... Molten rock inside the Earth undergoes a phase change as it cools to produce solid igneous rock. The chemical changes which form the rock depend on the type of minerals present and how fast the rock cools.

6 0
3 years ago
Read 2 more answers
Now moles:<br> moles of H2+<br> A moles of O2<br> moles of H20
yan [13]

Answer:

H2+ + O2 —— H2O.

Explanation:

Hope it helps you.

4 0
3 years ago
How many moles of MgSiO3 are in 199 g of the compound?
Leokris [45]
24.305 g +28.08 g + 3(15.999 g)=100.382
219 g MgSIO3 (1 mole MGSIO3/100.382g)=2.181 mol MgSIO3
the answer is 2.18 mol MgSIO3
8 0
4 years ago
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