Help soon plz giving brainliest

Chemistry

2 answers:

Sophie [7]3 years ago

8 0

Answer:

Carbon, nitrogen and water are recycled trough ecosystems many times. Of all these nitrogen is eventually broken down completely.

Final Answer: Nitrogen

Explanation:

All carbon, nitrogen and water are recycled by the biosphere.

But all of these nitrogen is eventually broken down because there are three bonds are present in nitrogen and these bonds are stronger so cannot be easily broken down.

yarga [219]3 years ago

6 0

Answer: The answer is nitrogen.

i just did the assignment

hope this helps you :D

You might be interested in

7. True or false. Where air masses collide, weather changes

ella [17]

Answer:true

Explanation:

8 0

3 years ago

PLEASE HELP- I WILL GIVE BRAINLIEST AND THANKS

julsineya [31]

Answer:

The mass of 10 cm³of a 0.4 g/dm³ solution of sodium carbonate is 0.004 grams

Explanation:

The question is with regards to density calculations

The density of the given sodium carbonate solution, ρ = 0.4 g/dm³

The volume of the given solution of sodium carbonate, V = 10 cm³ = 0.01 dm³

$Density \ of \ an \ object, \rho = \dfrac{The \ mass \ of \ the \ object, \ m }{\ The \ volume \ of \ the \ object, \ V }$

$\rho = \dfrac{m}{V}$

Therefore, we have;

$The \ Density \ of \ the \ sodium \ carbonate, \ \rho = 0.4 \ g/dm^3 = \dfrac{m }{ 0.01 \ dm^3 }$

The mass, "m", of the sodium carbonate in = ρ×V = 0.4 g/dm³ × 0.01 dm³ = 0.004 g

The mass of 10 cm³ (10 cm³ = 0.01 dm³) of a 0.4 g/dm³ solution of sodium carbonate, m = 0.004 g.

8 0

2 years ago

The polymer formed from the monomer ch2=ch–cn is select one:

podryga [215]

Answer:
None of the given options show polymer made up of H₂C=CH-CN (Acrylonitrile).

Explanation:
Acrylonitrile (H₂C=CH-CN) which is a monomer on self linkage results in a large chain polymer called as Polyacrylonitrile.
The structure of Polyacrylonitrile is as follow,

--(H₂C-CHCN-)n--

Where n shows the number of Acrylonitrile units joined together in the formation of Polyacrylonitrile. This polymerization reaction can take place by different mechanisms including free radical mechanism, acid catalyzed addition or base catalyzed addition reaction.

The polymerization is shown below,