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AysviL [449]
3 years ago
10

The reactants of two chemical equations are listed.

Chemistry
1 answer:
hjlf3 years ago
8 0
The correct answer is b
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a graduated cylinder (approximate as a regular cylinder) has a radius of 1.045 cm and a height of 30.48 cm. what is the volume o
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The half-life of a positron is very short. It reacts with an electron, and the masses of both are converted to two gamma-ray pho
sp2606 [1]

Explanation:

(a)   It is known that relation between energy and mass is as follows.

            E = 2 \times mc^{2}

where,    E = energy

              m = mass

              c = speed of light = 3 \times 10^{8} m/s

As it is given that mass is 9.109 \times 10^{-31} kg. So, putting the given values into the above formula as follows.

             E = 2 \times mc^{2}

                       = 2 \times 9.109 \times 10^{-31} kg \times 3 \times 10^{8}m/s

                       = 1.638 \times 10^{-13} J

Therefore, we can conclude that the energy produced by the reaction between one electron and one positron is 1.638 \times 10^{-13} J.

(b) When gamma ray photons are produced then they will have the same frequency. Relation between energy and frequency is as follows.

                    E = h \times \nu   ..... (1)

where,     h = plank's constant = 6.626 \times 10^{-34} J.s

              \nu = frequency

Also,     E = 2 \times mc^{2} ........ (2)

Hence, equating equations (1) and (2) as follows.

                    h \times \nu = 2 \times mc^{2}        

So,    

6.626 \times 10^{-34} Js \times \nu = 1.638 \times 10^{-13} J

                           \nu = 1.236 \times 10^{20} Hz

Thus, we can conclude that the frequency is 1.236 \times 10^{20} Hz.

5 0
4 years ago
Chemicals A and B react according to the equation A + B → C. How will the concentrations of each component of the reaction chang
Firlakuza [10]
The concentration of a and b will decrease while c will increase provided all other physical quantities are kept constant in the reaction
7 0
3 years ago
Read 2 more answers
Mixed Naming Worksheet – Ionic, Covalent and Acids
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3. Silicon Dioxide
4. Phosphorus Tetrabromide
5. Iron(II) sulfate
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8. Lithium sulfide
9. Hydrogen chloride
10. Magnesium bromide

I think that’s what it is,sorry if I’m wrong.
5 0
3 years ago
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