What is the mass number of sodium

Answer:

its b alkyne

Explanation:

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Answer:

Alkyne so its b

Answer:

Electrostatic repulsion, strong nuclear force

Explanation:

The nucleus consists of protons and neutrons. protons are positively charged while neutrons possess no charge.

Since protons are positively charged, they repel each other strongly (like charges repel). This strong repulsion of like charges makes the nucleus somewhat unstable leading to spontaneous fission of heavy nuclei.

However, an opposing force called nuclear attractive force tends to hold the nucleons together. This attraction occurs when two nucleons are bonded by a particle called a π meson.

Hence, the two forces that act in the nucleus to create a  'nuclear tug-of-war' are electrostatic repulsion and a strong nuclear force.

Answer:

Explanation:

The balanced chemical equation between

SrO + 2HCl → H2O + SrCl2

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:

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.

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3. Conducts electricity in aqueous solution.

Answer:

0.2atm

Explanation:

By Boyle's law

P1V1=P2V2

0.5 x 10 = P2 x 25

therefore, P2= 0.2atm

Answer:

14.6

Explanation:

I just took the test

The amount of heat to raise the temperature is 14.7J.

The specific heat capacity of a substance is the quantity of heat needed to raise the temperature of a unit quantity of the substance by one degree. Calling the amount of heat added Q, which will cause a change in temperature ∆T to a weight of substance W, at a specific heat of material Cp, then Q = w x Cp x ∆T

By applying the formula, we get

Q = w x Cp x ∆T

Q = 300 * 2.46 * 20/1000

Q = 14.760J

Heat is energy that is transferred from one body to another as the result of a difference in temperature.

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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:

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:

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:

filedownload.ashx  heres a pdf

Explanation:

Answer:

Energy of Movement.

Explanation:

Have a great day!

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.

Answer:

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

Explanation:

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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

Answer:

the answer is b

hope this helps :)

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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:

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:

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

.

Answer:

1.)C₃H₈O

2)OH

3.)1-propanol

1.) C4H8O

2.) C2H6O or CH3CH2OH

3.)Ethanol

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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