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borishaifa [10]
3 years ago
10

Which letter shows the most direct sunlight?

Chemistry
1 answer:
timama [110]3 years ago
6 0

Answer:c

Explanation:because the light is hitting the Earth straight on without a slant or without all the light, it is the most direct

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Which of the following cycles does not involve living organisms?
Aneli [31]
The correct answer is letter C. Rock Cycle. Living organisms involved in carbon cycle, oxygen cycle, and in nitrogen cycle. These are involved in the air that living organisms are taking in and out.
7 0
3 years ago
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What are abiotic factor is the most important in the mono lake ecosystem?
Oxana [17]

Answer:

The salt water, bc the salt water substances little life forms in the  water so that there is not a lot of living form in the salt water

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3 years ago
How to identify coplanar molecule?
lozanna [386]
See if the carbon atoms are SP2 or Sp they the coplanirty is more and if its Sp3 hybridization it cant be in coplanar as Sp3 is having Td shape where as sp2 and sp are not :)
7 0
3 years ago
Calculate the mass of beryllium (Be) needed to completely react with 18.9 g nitrogen gas (N2) to produce Bez N2, which is the on
choli [55]

Answer:

C = 18.29 g  

Explanation:

Given data:

Mass of beryllium needed = ?

Mass of nitrogen = 18.9 g

Solution:

Chemical equation:

3Be + N₂    →    Be₃N₂

now we will calculate the number of moles of nitrogen:

Number of moles = mass/molar mass

Number of moles = 18.9 g/ 28 g/mol

Number of moles = 0.675 mol

Now we will compare the moles of nitrogen and Be from balance chemical equation.

                     N₂        :       Be        

                       1          :       3

                  0.675       :      3/1×0.675 = 2.03 mol

Number of moles of Be needed are 2.03 mol.

Mass of Beryllium:

Mass = number of moles × molar mass

Mass = 2.03 mol ×   9.01 g/mol

Mass = 18.29 g  

4 0
3 years ago
Of the following transitions in the Bohr hydrogen atom, the ________ transition results in the emission of the lowest-energy pho
Sladkaya [172]
N=6 ——> n=1
hope this helps!
5 0
3 years ago
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