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Yuliya22 [10]
3 years ago
11

How is mass defect determined?

Chemistry
2 answers:
dimulka [17.4K]3 years ago
7 0
The answer to your question is C
soldier1979 [14.2K]3 years ago
7 0

Answer:

C. comparing the mass of the nucleus with the masses of the protons and neutrons

Explanation:

Mass defect is the difference in mass of an atom and the sum of the masses of neutrons, protons and electrons. The difference in mass or the mass defect in converted to energy according to Einstein's equation, E = mc², where E is energy, m is mass and c is the speed of light. Also according to law of conservation of mass and energy, mass and energy can neither be created nor destroyed. Mass gets converted ton energy and vice versa. The total mass and energy of the universe remains conserved.

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3. How many moles of H20 are in 15.2 grams of pure ice?
inna [77]

Answer:

18.01528 grams.

Explanation:

7 0
3 years ago
Which compound has the highest boiling point? HF, HI, HBr, HCl, or F2?
Kisachek [45]

Answer:

HF

Explanation:

This concept can be understood from the knowledge of Intermolecular forces of attraction.

Intermolecular bonds are Van der Waals forces which are weak forces of attraction joining non-polar and polar molecules together. They exist in the form of London Dispersion Forces and Dipole-dipole attraction.

An example of Dipole-dipole attraction is the hydrogen bond which is a unique dipole-dipole attraction between polar molecules in which a hydrogen atom is directly joined to a highly electronegative atom such as fluorine, oxygen, or nitrogen).

Molecules that possess the characteristics of hydrogen bonding have a higher boiling point. In the given question, only HF undergo hydrogen bond due to the electronegative effect of the fluorine element.

F2 occurs as a weak London dispersion force and it occurs between non-polar molecules.

3 0
3 years ago
Zinc and sulfuric acid solution produce zinc sulfate solution and hydrogen balanced chemical equation
IRISSAK [1]

Answer:

Zn + H2SO4 → ZnSO4 + H. 2

Explanation:

8 0
4 years ago
a gas thermometer measure temperature by measuring the pressure of a gas inside the fixed volume container a thermometer reads a
sdas [7]

Hello!

a gas thermometer measure temperature by measuring the pressure of a gas inside the fixed volume container a thermometer reads a pressure of 248 torr at 0 degrees Celsius what is the temperature when the thermometer reads a pressure of 345 torr

We have the following information:

P1 (initial pressure) = 248 torr

T1 (initial temperature) = 0 ºC (in Kelvin)

TK = TºC + 273.15 → TK = 0 + 273.15 → T1 (initial temperature) = 273.15 K

P2 (final pressure) = 345 torr

T2 (final temperature) = ? (in Kelvin)

According to the Law of Charles and Gay-Lussac in the study of gases, we have an isochoric (or isovolumetric) transformation when its volume remains constant or equal, then we will have the following formula:

\dfrac{P_1}{T_1} = \dfrac{P_2}{T_2}

\dfrac{248}{273.15} = \dfrac{345}{T_2}

248*T_2 = 345*273.15

248\:T_2 = 94236.75

T_2 = \dfrac{94236.75}{248}

T_2 = 379.9868952... \to \boxed{\boxed{T_2 \approx 380\:K}}\end{array}}\qquad\checkmark

If you want the solution in Celsius Temperature, we have:

TC = TK - 273.15

TC = 380 - 273.15

TC =  106.85 → Temperature = 106.85 ºC

_______________________________

I Hope this helps, greetings ... Dexteright02! =)

6 0
4 years ago
Which is a reason that a chemical engineer would use a rate law for a reaction in a chemical plant?
Harrizon [31]
<span>A.to calculate the amount of product that would form

</span>
5 0
4 years ago
Read 2 more answers
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