El silicio está formado por un 93% del isótopo de masa atómica 28 uma un 4% del isótopo de masa atómica 29 uma y el resto por el isótopo de masa atómica 30 uma

Answer:

The questions I would like to answer are:

Will the productivity of the river severn offset the cost of installing the plant?

Is it possible to build a dam on site?

Is it possible to establish submerged turbines in this location?

How would human life and nature be impacted by the plant?

Explanation:

Tidal power plants are signals that use tidal energy to generate electricity. The installation of this type of plant is quite expensive and involves the establishment of dams on site to take advantage of the differences between high and low tides and the establishment of submerged turbines to take advantage of sea currents.

To decide whether I would decide to build a tidal plant on the Severn River, I would need to evaluate a few things to make sure that the project is viable. For that I would ask myself some questions like:

Will the productivity of the river severn offset the cost of installing the plant? (If the installation costs are greater than the capacity of this river to promote high generation of electricity, it would be better to abandon the project)

Is it possible to build a dam on site? Is it possible to establish submerged turbines in this location? (It is necessary to consider the physical and chemical characteristics of the place to know if it is possible to install these two equipment and in a way that they work efficiently)

How would human life and nature be impacted by the plant? (Projects like this include major environmental and social impacts. These impacts must be analyzed and ways to mitigate them must be considered and included in the project.)

Answer:

The value of the Golden Igloo is $227.4 million.

Explanation:

First, we need to find the inner and the outer volume of the half-spherical shell:

[tex] V_{i} = \frac{1}{2}*\frac{4}{3}\pi r_{i}^{3} [/tex]

[tex] V_{o} = \frac{1}{2}*\frac{4}{3}\pi r_{o}^{3} [/tex]

The total volume is given by:

[tex] V_{T} = V_{o} - V_{i} [/tex]

Where:

[tex] V_{i} [/tex]: is the inner volume

[tex]r_{i}[/tex]: is the inner radius = 1.25/2 = 0.625 m

[tex] V_{o} [/tex]: is the outer volume

[tex]r_{o}[/tex]: is the outer radius = 1.45/2 = 0.725 m

Then, the total volume of the Igloo is:

[tex] V_{T} = \frac{2}{3}\pi r_{o}^{3} - \frac{2}{3}\pi r_{i}^{3} = \frac{2}{3}\pi [(0.725 m)^{3} - (0.625 m)^{3}] = 0.29 m^{3} [/tex]

Now, by using the density we can find the mass of the Igloo:

[tex] m = 19.3 \frac{g}{cm^{3}}*0.29 m^{3}*\frac{(100 cm)^{3}}{1 m^{3}} = 5.60 \cdot 10^{6} g [/tex]

Finally, the value (V) of the antiquity is:

[tex] V = \frac{\$ 1263}{oz}*5.60 \cdot 10^{6} g*\frac{1 oz}{31.1034768 g} = \$ 227.4 \cdot 10^{6} [/tex]  

Therefore, the value of the Golden Igloo is $227.4 million.

I hope it helps you!  

Answer:

6.39 × 10^23 kg (0.107 M⊕)

Explanation:

Answer:

The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

Explanation:

this is what will happen in water

Answer:

4 moles of potassium chlorate must be used to produce 6 moles of oxygen gas.

Explanation:

Answer:

Water

Explanation:

The substance that has the highest number of moles also has the highest number of atoms.

The number of atoms of a substance can be calculated using the Avogadro's number. This number gives the number of elementary entities such as atoms, molecules and ions in one mole of a substance.

All you need to do is to find out which substance has the highest number of moles. This substance will also have the highest number of atoms present.

Learn more about Avogadro's number: https://brainly.com/question/1445383

Explanation:

Yes carbon dioxide found in each case

Answer:

1. They are mostly used to protect materials and prevent chemical reactions.

2.These are Groups

3. I guess it is Rows

Answer:

Carbon dioxide and water.

Explanation:

If there isn't carbon dioxide, photosynthesis wouldn't happen as carbon dioxide is needed to transfer into the plant and after that the oxygen travels into the surroundings from the plant. There isn't any water, the plant wouldn't be able to make food called glucose.

Answer:

24.3g

Explanation:

Mr of Oxygen = 16 (15.999)

Mr of Magnesium = 24.3 (24.305)

Mass / Mr = moles

16.0g / 16 = 1

Mr x moles = Mass

24.3 x 1 = 24.3g

Answer:

False.

Explanation:

Carbon = 12

Beryllium = 9

good luck, i hope this helps :)

Answer:

isn't that evaporation if not you can just delete my answer-

Explanation:

Answer:

D.

Explanation:

There are three types of particles within atoms: protons, neutrons, and electrons.

Electrons have essentially no mass and orbit the nucleus in various energy levels.

Protons and neutrons have mass and are both found within the nucleus of the atom.

Answer:

It wouldn't let me post it for some reason. Its all in the picture.

:)

Law of octaves states that when the elements are arranged in ascending order of atomic mass, every eighth element has comparable properties.

Features of law of octaves -:

Some limitations were made into this -:

Learn more about law of octaves ,here:

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The law of octaves state about the elements​ that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.

when the elements are arranged in the increasing order of atomic mass, every eighth element has comparable properties and  that  was the first time an atomic number was introduced  to each element of the periodic table.

To become the stable according to rule element must complete it octave otherwise it cannot be considered the stable one.

Therefore, law of octaves state about the elements​ that there must be 8 electrons in the outermost or valance shell of the electron to obtained the stability.

Learn more about octave rule, here:

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Answer:

A. Empirical formula => C₂H₄O

B. Molecular formula => C₄H₈O₂

Explanation:

From the question given above, the following data were obtained:

Mass of C = 0.273 g

Mass of H = 0.046 g

Mass of O = 0.182 g

Molar mass of compound = 88 g/mol

A. Determination of the empirical formula of the compound.

C = 0.273 g

H = 0.046 g

O = 0.182 g

Divide by their molar mass

C = 0.273 /12 = 0.023

H = 0.046 /1 = 0.046

O = 0.182 /16 = 0.011

Divide by the smallest

C = 0.023 / 0.011 = 2

H = 0.046 / 0.011 = 4

O = 0.011 / 0.011 = 1

Thus, the empirical formula of the compound is C₂H₄O

B. Determination of the molecular formula of the compound.

Empirical formula = C₂H₄O

Molar mass of compound = 88 g/mol

Molecular formula =?

Molecular formula = [C₂H₄O]ₙ

[C₂H₄O]ₙ = 88

[(12×2) + (4×1) + 16]n = 88

[24 + 4 + 16]n = 88

44n = 88

Divide both side by 44

n = 88 / 44

n = 2

Molecular formula = [C₂H₄O]ₙ

Molecular formula = [C₂H₄O]₂

Molecular formula = C₄H₈O₂

Answer:

B

Explanation:

When stem cells differentiate, they are different (almost like mutation).

Answer:

osifigkjgjcjfjrjrkrjrktktkkfkfkrkrkrktkgktkt

Answer:

1. 2AgO2 --> 4 Ag + O2

2. Decomposition

3. 2NaBr + CaF2 --> 2NaF + CaBr2

Explanation:

Answer:

3.2

Explanation:

dont trust me

Answer:

it's d

Explanation:

I took the test and got it right

Answer:

400x

Explanation:

magnification=magnification of objective lens*magnification of eyepiece lens

m=40*10

m=400x

Answer:

a charge on a solar battery cell

Answer:

uuuhhh?

Explanation:

Answer:

1. Solid

2. atom

3. faster and farther apart

4.more freely moving than a solid

5.The amount of matte in an object

Explanation:

Answer:

1. Solid

2. Atom

3. Faster and farther apart

4. More freely moving than a solid

5. The amount of matter in an object.

Answer:

A reactive metal has the ability to easily lose an electron and acquire a positive charge. Sodium easily loses electrons and acquires a positive charge. Sodium easily lose electrons than magnesium and get oxidized to easily.

Explanation:

Answer:

2O is an atom while O2 Is a molecule