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3 years ago

Nuclear binding energies for the fusion of a mole of nuclei typically correspond to mass differences on the order of:

Chemistry

1 answer:

MrRissso [65]3 years ago

5 0

Answer:

nanograms

Explanation:

Nuclear binding energy refers to the energy needed in order to break up the nucleus of an atom into its component parts: protons and neutrons, it is also the energy used up in the formation of the atom.

The difference between the calculated and actual mass of a nucleus gives its mass defect which is used to calculate the binding energy according to Einstein's equation. The mass differences are usually very small, as little as the order of nanograms.

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Suppose that you lowered the temperature of a gas from 100˚C to 50 ˚C. By what factor do you change the volume of the gas?

Maru [420]

Answer:- Volume decreases by a factor of 1.15.

Solution:- At constant pressure, volume of the gas is directly proportional to the the kelvin temperature.

The equation is written as:

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where, $V_1$ is the volume at initial temperature $T_1$ and $V_2$ is the volume at final temperature $T_2$ .

Temperature must be in kelvins. So, let's convert both the temperatures to kelvin.

To convert degree C to kelvin we add 273.

So, $T_1$ = 100 + 273 = 373 K

$T_2$ = 50 + 273 = 323 K

The equation could also be written as:-

$\frac{V_1}{V_2}=\frac{T_1}{T_2}$

$\frac{V_1}{V_2}=\frac{373}{323}$

$\frac{V_1}{V_2}$ = 1.15

From here we could say that the volume decreases by a factor of 1.15.

For example if the initial volume $V_1$ is 1 L then final volume $V_2$ will be $\frac{1L}{1.15}$ that is 0.87 L.

4 0

3 years ago

Boiling point elevation means that:

jeka94

Answer:

B. it will take more energy for the particles of the solution to overcome the atmospheric pressure.

Explanation:

i checked the slideshow from educere lol (slide 8 colligative properties lesson)

8 0

3 years ago

When a scientist is beginning the process what is the key term she or he must ask in order to begin?

ella [17]

Answer:

B- why or how because any scientist deals with matter it's relationships ,properties and its composition which can be inferred from the questions why and how

5 0

3 years ago

Whats an e- in chemistry

Roman55 [17]

Answer:

electron gain

Explanation:

e- is for electron gain while

e+ is for electron loss

4 0

3 years ago

What is the result of mixing a water molecule and an oxygen molecule?

Julli [10]

The result of this would be H₂O.

H₂0, is nothing but water.

A chemical reaction is occurring.

Hope this helps! :D

4 0

3 years ago