Which of these is an oxidation half-reaction? upper v superscript 3 plus, plus e superscript minus right arrow upper v superscript 2 plus. upper f lower e, right arrow upper f lower e superscript 3 plus, plus 3 lower e superscript minus. upper c superscript 4 plus, plus 2 e superscript minus right arrow upper c superscript 2 plus.

The energy produced by the sun is as a result of nuclear reactions which produces large amounts of energy.

Chemical reactions are reactions which occur as a result of a rearrangement of atoms of elements to form new combinations of substances known as compounds.

Since chemical reactions which have relatively short lifespans, scientist would have assumed that the sun is very young.

However, nuclear reactions have been proven to be the means by which the sun produces its energy.

Nuclear reactions release large amounts of energy and have relatively long lifespans.

Therefore, the energy produced by the sun is as a result of nuclear reactions.

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Answer:

57.6g

Explanation:

In the balanced equation H2O and Mg(OH)2 have the same coefficient (1) so we know that 3.2 moles of H2O react to form 3.2 moles of Mg(OH)2. Now we just have to calculate the mass of the H2O which we can do by finding the molar mass from the periodic table. For this just add the molar masses of the consituent atoms. (2(1)+1(16))=18g/mol H2O. Now that we know the molar mass we just have to multiply it by the amount of moles. 18*3.2=57.6g H2O

Answer:

See answers below

Explanation:

-44.3 kj/mole   *   x moles =  -  18.7 kj

solve for x = .422 mole  dissolved

Mole weight of  NaOH is

                     Na = 22.989     O = 15.999   H = 1.008    gm/mole

                            = ~~ 40 gm/mole   for NaOH

40 gm / mole   *  .422 mole = 16.88 gm  of NaOH

Answer:

Mode of transportation and source of energy

Energy sources are used in several major ways

Gasoline is used in cars, motorcycles, light trucks, and boats. Aviation gasoline is used in many types of airplanes. Distillate fuels are used mainly by trucks, buses, and trains and in boats and ships. Jet fuel is used in jet airplanes and some types of helicopters.

Explanation:

Answer:

1s2 2s2 2p3

Explanation:

Answer:

25.91 L

Explanation:

P1V1= P2V2

748 (26.5) =  765 ( V2)      V2 = 25.91 LITERS  

Answer:

Brainliest pls

Explanation:

Theoretical yield = 0.1 g

Percent yield = 80%

Hazardous materials are grouped into classes identifying their similarities in composition and structure.

The hazardous materials are grouped into classes in order to tell us about the severity of hazard and it is done on the basis of similarity in composition.

So we can conclude that hazardous materials are grouped into classes identifying their similarities in composition and structure.

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Answer:

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure

Explanation:

road transport

hope it helps...!!!

Answer:

1. road

2. It evenly

3. system, subsystem, componet

4. control

5. combustion.

Hope this is helpful

Answer:

688g

Explanation:

This is the correct awnser

Answer:

im assuming its due to something like water on water not eing as bad as the thwap of water on land. this wasnt a test question was it?

Explanation:

Answer:

As the tsunami waves become compressed near the coast, the wavelength is shortened and the wave energy is directed upward - thus increasing their heights considerably. Just as with ordinary surf, the energy of the tsunami waves must be contained in a smaller volume of water, so the waves grow in height. and they can't do damage out in the middle of the ocean because there is not much to damage out in sea  

Explanation:

Answer:

Explanation:

Particles in both liquids and gases (collectively called fluids) move randomly. This is called Brownian motion. They do this because they are bombarded by the other moving particles in the fluid. Larger particles can be moved by light, fast-moving molecules.

Answer:

As the plates travel horizontally past one other, no crust is formed nor destroyed.

Explanation: tectonic plates

large iguanas are affected by el nino temperatures

because algae do not grow as rapidly with el nino temperatures

survival rates for the larger iguanas drop

if they are bigger than 36 centimeters

the drop happens beginning with sizes around 40 centimeters

Answer:

Is this what you're looking for?

Explanation:

Answer:

no, it is fastest when many bubbles are produced.

Explanation:

Answer:

.02232 mole

Explanation:

At STP each 22.4 liters is a mole

.5 liters / 22.4 l/mole = .02232 mole

Answer:

due to difference ic kinetic energy

Explanation:

The expression that can be used to determine Cl2O(g) is ;

[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]

The general expression for ΔS°rxn of a chemical reaction

ΔS°rxn = ∑mS°products - ∑nS°reactants

where ; m and n = stoichiometry coefficients

Considering the given reaction : H₂O(g) + Cl₂O(g) → 2HCIO (g)  

[tex]\beta[/tex]S°rxn  = [tex]2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) } ^{o} - S_{Cl_{2}O } ^{o}[/tex] ------- ( 2 )

Rearranging the equation above

[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]

Hence we can conclude that The expression that can be used to determine Cl2O(g) is ;

[tex]S_{cl_{2}o(g) } ^{o} = 2S_{HCIO(g)} ^{o} - S_{H_{2}O(g) }^{o} - \beta S_{rxn} ^{o}[/tex]

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Answer:This reaction will be followed by TLC to monitor the progress of the oxidation. The camphor is then reduced by sodium borohydride to give the isomeric alcohol,

Explanation:

hopes this helps<33

If the sample of helium and nitrogen gas has the same kinetic energy, then it follows that hey have the same temperature.

We know that gas molecuules are in constant random motion hence they collide with each other as well as with the walls of the container. The temeprature of the gas determines the kinetic energy of the gas.

Hence if the sample of helium and nitrogen gas has the same kinetic energy, then it follows that hey have the same temperature.

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Answer: I believe in you.

Explanation:

studdy. You got this buddy!

Answer: 1.2 M

Explanation:

molarity = (moles of solute)/(liters of solution) = 2.4 / 2.0 = 1.2 M

Answer: Heyo Kenji Here! Here's your answer- when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Explanation: ~Hope this helps!~

Have a nice day!

- Kenji ^^

If excess [tex]H_2O[/tex] is used as stated in the illustration the amount of [tex]Mg_3N_2[/tex] that would be required would be 7.57 grams

From the equation of the reaction:

[tex]Mg_3N_2(s) + 6H_2O(l) --- > 3Mg(OH)_2(s) + 2NH_3(g)[/tex]

Since the yield is 80% of the theoretical value, in order to make 10g, the theoretical yield would be 12.5 g.

Mole ratio of [tex]Mg_3N_2[/tex] and [tex]Mg(OH)_2[/tex] = 3:1

Mole of 12.5 g  [tex]Mg(OH)_2[/tex] = 12.5/53.32 = 0.225moles

Equivalent mole of [tex]Mg_3N_2[/tex]  = 0.124/3 = 0.075 moles

Mass of 0.0041 moles  [tex]Mg_3N_2[/tex] = 0.075 x 100.95 = 7.57 grams

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At 10°C :

Temperature (in Kelvin) :

[tex]\qquad \tt \dashrightarrow \: 10 + 273[/tex]

[tex]\qquad \tt \dashrightarrow \: 283 \: k[/tex]

Now,

Temperature in Kelvin (at 150° C)

[tex]\qquad \tt \dashrightarrow \:150 + 173[/tex]

[tex]\qquad \tt \dashrightarrow \:323 \: k[/tex]

Now, let's find the volume (x) [ assume pressure to be constant ]

[tex]\qquad \tt \dashrightarrow \: \dfrac{V_1}{T_1} = \dfrac{V_2}{T_2}[/tex]

[tex]\qquad \tt \dashrightarrow \: \dfrac{3.8}{283} = \dfrac{x}{323}[/tex]

[tex]\qquad \tt \dashrightarrow \: \dfrac{3.8}{283} \times 323 = {x}[/tex]

[tex]\qquad \tt \dashrightarrow \: {x} \approx4.34 \: \: litres[/tex]

Answer:

It has two isomers; n-butane and isobutane. Here n-butane is a straight-chain compound with four carbon atoms bonded with single covalent bonds. Explanation: Butane is an alkane with four carbon atoms so molecular formula is C4H10.

Explanation:

Answer: 5.10 L

Explanation: