How can one determine that a redox reaction will be nonspontaneous?

Answer:

Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids.

Explanation:

Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids. A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope.

heres the link for more information

https://www.iaea.org/topics/radiotracers#:~:text=Radioactive%20tracers%20are%20widely%20used,been%20replaced%20by%20a%20radioisotope

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Answer:

Its rich carbon content gives coal most of its energy content. When coal is burned in the presence of air or oxygen, heat energy is released. This energy can then be converted to other forms of useful energy. Coal-fired plants produce electricity by burning coal in a boiler to produce steam. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity.

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Answer:

0.0118mol

Explanation:

To obtain the number of moles (n) in the given number of molecules of iron, we divide by Avagadro's number (6.02 × 10²³).

That is; n = number of molecules ÷ nA

According to this question, there are 7.12 x 1021 atoms of Iron (Fe).

n = 7.12 x 10²¹ ÷ 6.02 × 10²³

n = 7.12/6.02 × 10^ (21 - 23)

n = 1.183 × 10^-2

n = 0.0118mol

Answer:

If there's 4 molecules of CH4, then there will be 4 atoms of carbon and 16 atoms of hydrogen. (However, if it's just 1 molecule of CH4, then 1 carbon atom and 4 hydrogen)

Explanation:

Yes, the subscript does have an effect on the answer. The subscript indicates how much of a type of atom there is in a molecule. For example, 1 singular molecule of CH4 contains 1 carbon atom and 4 hydrogen atoms. Due to the subscript (4), it tells us that there are 4 hydrogen atoms. In this case, 4 molecules of CH4 contains 4 carbon atoms and 16 hydrogen atoms.

una célula procariota o procarionte es un organismo unicelular sin núcleo cuyo material genético se encuentra disperso en el citoplasma reunido en una zona denominada nucleoide. por el contrario las células que sí tienen un núcleo diferenciado del citoplasma se llaman eucariotas es decir aquellas en las que su ADN se encuentra dentro de un compartimento separado del resto de la célula.

Answer:

D

Explanation:

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3. Conducts electricity in aqueous solution.

Answer:

If you pass bromine vapour over hot iron, a similar but slightly less vigorous reaction happens, this time producing iron(III) bromide. Anhydrous iron(III) bromide is usually produced as a reddish-brown solid. Again the iron has been oxidised to an oxidation state of +3.

Explanation:

Answer:

0.188mol

Explanation:

Using the formula;

mole = mass/molar mass

Molar mass of hypomanganous acid. (H3MnO4) = 1(3) + 55 + 16(4)

= 3 + 55 + 64

= 122g/mol

According to this question, there are 22.912g of H3MnO4

mole = 22.912g ÷ 122g/mol

mole = 0.188mol

Answer:

Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve changes in nuclear binding energies.

Explanation:

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Answer:

2,325.6

Explanation:

You use the formula

Q =mco

M =mass =68

C=0.9

O=temperature increases =93-55=38

Then multiple all this 3

Q=68*0.9*38

The number of joules of heat that is needed to heat 68.00 grams of aluminum foil is 2,325.6.

The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.

By the formula of heat

Q = mct

The mass of aluminum is 68.00

the difference in temperature is 93.00 °C - 55.00 °C = 38.00

The specific heat is 0.90 J/g

Putting the values in the equation

[tex]Q = mct\\\\Q = 68.00 \times 0.90 \times 38.00 = 2325.6[/tex]

Thus, the joules of heat is 2325.6 J.

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Answer:

Energy of Movement.

Explanation:

Have a great day!

Answer:

Explanation:

The balanced chemical equation between

SrO + 2HCl → H2O + SrCl2

Explanation:

mole of acid/mole of base=(concentration of acid×volume of acid)/(concentration of base×volume of base)

Na/Nb=CaVa/CbVb

1/2=(Ca×16.7)/(0.2×25)

0.2×25=2×Ca×16.7

Ca=(0.2×25)/(2×16.7)

Ca=0.15mol/dm³

mole of acid=Concentration×volume

mole of acid=0.15×(16.7/1000)

mole of acid=2.5×10^-3moles

The answer is the concentration of H₂SO₄ = 0.25 mol/L or 0.25 M.

A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water.

The neutralization of a strong acid and strong base has a pH equal to 7.

The neutralization of a strong acid and weak base will have a pH of less than 7, and conversely, the resulting pH when a strong base neutralizes a weak acid will be greater than 7.

When a solution is neutralized, it means that salts are formed from equal weights of acid and base

H₂SO₄(l) + 2NaOH(l) - - - > Na₂SO₄(aq) + 2H₂O((l)

From the Equation

Mole ratio of H₂SO₄ and NaOH = 1 : 2

Molarity of Sodium Hydroxide = 0.200mol/dm3

Molarity = moles of solute/litre of solution

moles of solute = 0.200 * 25 *10⁻³

moles of  NaOH = 5 *10⁻³ moles

As Mole ratio of H₂SO₄ and NaOH = 1 : 2

moles of H₂SO₄ = 2.5 *10⁻³

So, the concentration of H₂SO₄ = 0.25 mol/L or 0.25 M.

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Answer:

its b alkyne

Explanation:

brinliest po plsss

Answer:

Alkyne so its b

Answer:

It slows down

Explanation:

Answer:

1.)C₃H₈O

2)OH

3.)1-propanol

1.) C4H8O

2.) C2H6O or CH3CH2OH

3.)Ethanol

Answer:

Your hypothesis is incorrect because warm substances rise when in a colder environment. The correct hypothesis would be : "If the 2 chambers of water are poured side by side, the warmer water will float above the cooler layer because warm water rises and cold water sinks."

Explanation:

Answer: affceted liquids?

Explanation:

Answer:

3,011.10e23.

Explanation:

Mole measure the number of elementary entities of a given substance that are present in a given sample. 3.01×10²³molecules are in 0.500 mole of  N₂O₅.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is directly proportional to given mass.

Mathematically,

Number of molecules/atoms/ions of N₂O₅ = number of moles×6.022×10²³(Avogadro number)

Number of moles of N₂O₅=  0.500 mole

Substituting the given values, we get

Number of molecules/atoms/ions =0.500moles×6.022×10²³(Avogadro number)

Number of molecules/atoms/ions of N₂O₅ =3.01×10²³molecules.

Therefore, 3.01×10²³molecules are in 0.500 mole of  N₂O₅.

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Answer:

i believe its 12

Explanation:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH.

Answer:

0.2atm

Explanation:

By Boyle's law

P1V1=P2V2

0.5 x 10 = P2 x 25

therefore, P2= 0.2atm

Explanation:

I think the answer is B cause i dont think All naturally occurring isotopes of elements are radioactive, as are isotopes formed in nuclear reactions. Im not sure