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3 years ago

7

Essential life materials, like nitrogen and carbon, are exchanged and recycled through _____.

2 answers:

Scorpion4ik [409]3 years ago

6 0

Answer:

Biogeochemical Cycles.

Explanation:

In Earth Science and ecology, a biogeochemical cycle or cycling of substances refers to a pathway by which a chemical component mediates via biosphere (biotic) and lithosphere, atmosphere, and hydrosphere (abiotic) constituents of the Earth.

There are biogeochemical cycles for the chemical elements carbon, mercury, calcium, hydrogen, phosphorus, nitrogen, sulfur, selenium, and oxygen. The important life constituents, like carbon and nitrogen, are recycled and exchanged via biogeochemical cycles.

SpyIntel [72]3 years ago

5 0

The answer is A, biogeochemical cycles.

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Determine the frequency of light with a wavelength of 2.672 x 10^-7cm

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2 years ago

A solution of malonic acid, H2C3H2O4 , was standardized by titration with 0.1000 M NaOH solution. If 21.17 mL of the NaOH soluti

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Answer: The molarity of the malonic acid solution is 0.08335 M

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where,

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$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

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$n_1=2\\M_1=?\\V_1=12.70mL\\n_2=1\\M_2=0.1000M\\V_2=21.17mL$

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3 years ago

What is the mass of 2.9 moles of calcium? Show all work!

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Answer:

the mass of 2.9 moles of calcium is 116 g

Explanation:

The computation of the mass of 2.9 moles of calcium is shown below

As we know that

Mole = mass ÷ molar mass

where,

Moles be 2.9

And, we know that the molar mass of calcium be 40g/mol

Now put the values to the above formula

2.9 = Mass ÷ 40

So, the mass would be

= 40 × 2.9

= 116 g

Hence, the mass of 2.9 moles of calcium is 116 g

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3 years ago

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