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Darina [25.2K]
3 years ago
11

HELP PLZZZZ GIVE BRAINLIST PLEZZ HELP!!!!!!!!!!!

Chemistry
1 answer:
mote1985 [20]3 years ago
3 0

Explanation and Answer:

This is an opinion based question and there could be many different responses these are just examples of solution to restore the fishery:

-limiting the season during which lobsters can be caught this allows the population to reproduce itself gradually but maintaining it in control

-limiting the amount of lobster that can be caught therefore again letting the population increase

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When a sample of a compound in the vitamin D family was burned in a combustion analysis, 5.983 mg of the compound gave 18.490 mg
Jet001 [13]
We calculate it as follows:

Moles CO2 = 0.01849 g / 44 = 0.000420 
<span>Mass C = 0.000420 x 12 = 0.00504 g </span>
<span>Moles H = 2 x 0.006232 / 18 = 0.000692 </span>
<span>Mass H = 0.000692 g </span>
<span>Mass O = 0.005982 - ( 0.00504 + 0.000692) = 0.00025 </span>
<span>Moles O = 0.00025 / 16 = 0.0000156 </span>
<span>C 0.000420
H 0.000692
O 0.0000156 
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<span>divide each by the smallest value, giving you the chemical formula as:
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C27H44O</span>
5 0
3 years ago
Read 2 more answers
What is the mole ratio of fe304 to fe?
serg [7]
Answer: 1:3

Explanation:

1) To state the mole ratio of a product and a reactant we need the chemical equation that shows the reaction.

2) In the case of Fe3O4 and Fe, the chemical equation is:

<span>              Fe+H2O → Fe3O4+H2.

3) Now, you balance the equation, which will give you the coefficients of each reactant and product of the chemical reaction:
</span>
<span>              3Fe+4H2O → Fe3O4+4H2

4) From that the mole ratios are:

              3 mol Fe : 4 mol 4H2O : 1 mol Fe3O4 : 4 mol H2.

5) The question requires you to find the mole ratio for Fe3O4 to Fe. Tha is:

            1 mole Fe3O4 : 3 mole Fe

So, the answer is 1:3


</span>
4 0
3 years ago
How many significant figures in 890
Kamila [148]

Answer:

890 has 2 significant figures

8 0
3 years ago
Before entering the cyclotron, the particles are accelerated by a potential difference V. Find the speed v with which the partic
vesna_86 [32]

Answer:

Speed, v=\sqrt{\dfrac{2qV}{m}}

Explanation:

The device which is used to accelerate charged particles to higher energies is called a cyclotron. It is based on the principle that the particle when placed in a magnetic field will possess a magnetic force. Just because of this Lorentz force it moves in a circular path.  

Let m, q and V are the mass, charge and potential difference at which the particle is accelerated.

The work done by the particles is equal to the kinetic energy stored in it such that,

qV=\dfrac{1}{2}mv^2

v is the speed with which the particles enter the cyclotron

So,

v=\sqrt{\dfrac{2qV}{m}}

So, the speed with which the particles enter the cyclotron is v=\sqrt{\dfrac{2qV}{m}}. Hence, this is the required solution.

7 0
3 years ago
9. Which one of the following is not a potential effect of global warming?
valentina_108 [34]

Answer:

D. Increase in UV radiation​

Explanation:

I hope it helps. brainliest pls

5 0
2 years ago
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