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Use the model to describe the global pattern of atmospheric circulation.

Why is your model useful for describing winds over the oceans but not necessarily the winds that blow over landforms, such as coastlines and mountains?

Use the model to describe how the unequal heating of Earth and Earth's rotation causes Earth's patterns of atmospheric circulation.

Which of these solutions is the most basic?

[OH-] = 4.3 x 10-9 M

[OH-] = 2.8 x 10-11 M

[OH-] = 6.7 x 10-10 M

[OH-] = 1.0 x 10-5 M

[OH-] = 4.3 x 10-9 M

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[OH-] = 2.8 x 10-11 M

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[OH-] = 6.7 x 10-10 M

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[OH-] = 1.0 x 10-5 M

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we know that , the solution with pH > 7 is termed as basic and more the pH ,more the basicity, hence ,the solution with the highest pH would be the strongest base out of these all which is

[OH-] = 1.0 x 10-5 M with pH = 9

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Note the rule

And we can find the answer through logarithm rules basic

So

Higher the n higher the pOH

But

As we can see

Option D has least n (5)

Hence D is more basic

[tex]\\ \rm\Rrightarrow 2AlCl_3+3F_2\longrightarrow 2AlF_3+3Cl_2[/tex]

3mols of fluorine produce 2 mol chlorine

1 mol fluorine produces 2/3=0.6mol chlorine

Moles of fluorine gas=

Moles of chlorine:-

Mass of chlorine

Answer:

Magnesium,Berillium,

Explanation:

they they belong to group II

it is water because it is dissolving the sodium chloride

Answer:

A

Explanation:

Developing work ethics won't lower your stress although it may make your conscience a little happier. Not B

Not C. Procrastinating just makes things harder. The mountain of things to do is not diminishing at all and your stress knows it.

Not D. Although D is the second best answer, setting goals is not really an action. It is a plan for how to work. But it is not work. Still having a goal is useful.

The answer is A. Just keep hitting what you have to do at a steady pace.

Answer:

Nitrogen, Hydrogen, Chromium

Explanation:

N= Nitrogen

H= Hydrogen (it is not helium because helium is "He")

Cr= Chromium

The common intermolecular forces present in the compounds CH3CH2CH2NH2 and CH3CH2C02H are Dispersion forces, dipole-dipole forces, and hydrogen bonding.

Intermolecular forces are forces of attraction between molecules of the same compound.

Intermolecular forces are important in the physical properties of molecules.

Some intermolecular forces are:

The given compounds are contain hydrogen bonding and London dispersion forces as well as dipole-dipole forces.

Therefore, the common intermolecular forces present in the compounds CH3CH2CH2NH2 and CH3CH2C02H are Dispersion forces, dipole-dipole forces, and hydrogen bonding.

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941539.2 g of mass of oxygen is produced when 2000 kg of aluminium oxide is completely electrolysed.

Electrolysis is the process by which electric current is passed through a substance to effect a chemical change.

The mass of aluminium oxide Al₂O₃ = 2000 kg = 2000 000 g

Molar mass of Al₂O₃ = 101.96 g/mol

no of moles = [tex]\frac{mass }{ molar \;mass}[/tex]

no of moles of Al₂O₃ =  [tex]\frac{2000 000 g}{101.96 g/mol}[/tex]

no of moles of Al₂O₃ = 19615.4 mol

From the reaction:

4Al + 3O₂  ⇒  Al₂O₃

To determine the moles of O₂ in Al₂O₃:

Then;

19615.4 mol X [tex]\frac{3}{2}[/tex] mol of O₂ = 29423.1

The mass of oxygen now = 29423.1  × 32 g

= 941539.2 g

Hence,  941539.2 g of mass of oxygen is produced when 2000 kg of aluminium oxide is completely electrolysed.

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Answer:

The low molecular weight of water makes water a favorable liquid for steaming

¤ As water has the ability to form hydrogen bonds which makes it an excellent solvent.

¤ For this ability of water it can dissolve many different kinds of molecules.

Answer:

1.99 M

Explanation:

It gives the mass of a compound, KNO3. First, find the gram formula mass of KNO3. You should get 101.102 g/mol, or something very close. Next, divide given mass by g/mol mass to get number of moles. In this case, 45.3/101.102 = .44806, roughly.

Now, since it says molar concentration, it is asking for moles per liter of solution. If it only gives you 225 mL, or .225 L, you have to adjust for that value. Divide the number of moles you have by number of liters.

.44806/.225 = 1.99 M. This isn't the exact answer, but always remember to round for significant figures. Since both numbers contain 3 significant figures, your answer should have 3. Therefore 1.99 is your answer.

Answer:

Water and plastic

Explanation:

The other two dont make as much sense

Answer:

orange juice because it a type of acid.

Answer:

58.44 g/mol

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Answer:

MAC: Assembly of the MAC leads to pores that disrupt the cell membrane of target cells, leading to cell lysis and death

Interferons: Stimulates the infected cells and those nearby to produce proteins that prevent the virus from replicating within them

Cytokines: Molecular messengers between cells

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Answer:

mesosphere and thermosphere

Explanation:

Answer:

27.07 gm   nine days ago

Explanation:

17.5 = x (1/2)^9/14.3

x = 27.07 gm

Answer:

S

Explanation:

Litmus is an example of an indicator, a substance that changes color depending on its pH (pH is a measure of the concentration of protons, or H+ ions). In the Titration Gizmo™, you will use indicators to show how acids are neutralized by bases, and vice versa.

To begin, check that 1.00 M NaOH is selected for the Burette, Mystery HBr is selected for the Flask, and Bromthymol blue is selected for the Indicator.

Calculate: Concentration is measured by molarity (M), or moles per liter. Brackets are also used to symbolize molarity. For example, if 0.6 moles of HNO3 are dissolved in a liter of water, you would say [HNO3] = 0.6 M.

Because HNO3 is a strong acid, it dissociates almost completely in water. That means the concentration of H+ is very nearly equal to that of HNO3.What is [H+] if [HNO3] is 0.01 M? 0.01 M

The pH of a solution is equal to the negative log of H+ concentration: pH = –log[H+]

Describe: The equation for the reaction of nitric acid (HNO3) and sodium hydroxide (NaOH) is shown on the bottom right of the Gizmo.

Measure: A titration can be used to determine the concentration of an acid or base by measuring the amount of a solution with a known concentration, called the titrant, which reacts completely with a solution of unknown concentration, called the analyte. The point at which this occurs is called the equivalence point.

Explain: A titration curve is a graph of pH vs. volume of titrant. The graph at right shows a typical titration curve for the titration of a strong acid by a strong base. (A strong base is one that has relatively high dissociation in water.)

According to theBrønsted-Lowry definition, an acid is a substance that is capable of donating a proton to another substance. A base is a substance that accepts protons. When an acid and a base are combined, the acid is neutralized as the base accepts the protons produced by the acid.One way to determine if a solution is acidic or basic is to use litmus paper, as shown above. There are two types of litmus papers: red and blue.How does litmus paper indicate an acid? Both strips turn red.

Answer:

Oxidation: loss of electrons, gain of oxygen

Answer:

1st is decrease

2nd increase

Explanation:

I just did it

Answer:

1. Decrease 2. Increase

Explanation:

Edge 2023

Answer:

if you mutliply 8x2 it would be 16 and half of 16 is 8 and if you multiply that by 2 you get 16 again and then if you multiply that by 2 it comes out to 32 then devide that by 2 and you get 16 then divide again and you get 8

Explanation:

Answer:

silicon is the most common semiconductor used in computer chips

The energy released in nuclear reactions are far larger than that released in chemical reactions due to the release of nuclear energy from the nucleus.

Energy is released in a reaction due to the breaking of bonds are well as formation of bonds.

The quantity of energy released in reactions differs according to the reaction type involved.

When compared to chemical reactions, the energy released in nuclear reactions are very much higher because of the changes that occurs in the nucleus of the atoms involving nuclear energy.

The energy, E released in nuclear reactions is given by the formula below:

[tex]E = mc^{2}[/tex]

where m is the mass of the substance and c is the speed of light.

Therefore, the energy released in nuclear reactions are far larger than that released in chemical reactions.

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Answer:

3.39 x 1014 J/Kg

Explanation:

Answer:

The limiting reagent is the reactant that is used up completely. This stops the reaction and no further products are made. Given the balanced chemical equation that describes the reaction, there are several ways to identify the limiting reagent.Explanation:

Answer:

lead (II) chlorate

Explanation:

precipitate means not soluble in water

potassium chlorate is not very soluble in water, it precipitates and may be collected by filtration

lead(II) chloride can be made as a white precipitate by adding a solution containing chloride ions to lead(II) nitrate solution

thoughtcocom chemguidecouk

If the concentration of the solutions are doubled then the cell EMF is also doubled.

According to the Nernst equation, the concentration of the species determines the cell EMF as we can see form the formula;

Ecell = E°cell - 0.0592/nlogQ.

Hence, if the concentration of the solutions are doubled then the cell EMF is also doubled.

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We know

[tex]\\ \rm\Rrightarrow S\propto T[/tex]

According to gay lussac's law

[tex]\\ \rm\Rrightarrow P\propto T[/tex]

So our answer is high pressure and high temperature

Answer:

If liquid bromine is cooled to form a solid, which type of solid does it form? Brass is made by melting copper and zinc and physically mixing them. As this alloy is cooled, it forms a solid where the copper and zinc are not chemically bonded together.

Explanation: