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Anna11 [10]
3 years ago
15

In a nuclear reaction, the energy released is equal to 8.1 x 1016 joules. Calculate the mass lost in this reaction. (1 J = 1 kg

m2/s2) and the speed of light = 3.00 × 10^8 m/s ]
Answer

7.2 x 1032 kg

2.7 x 108 kg

9.0 x 10-1 kg

7.2 x 10-16 kg
Chemistry
2 answers:
makvit [3.9K]3 years ago
5 0
Use the formula E=mc^2
energy given=<span>8.1 x 10^16 joules
</span>speed of <span>light = 3.00 × 10^8 m/s
</span>
plug in the values we'll get mass=<span>9.0 x 10-1 kg</span>

N76 [4]3 years ago
3 0

Answer : The mass lost in this reaction will be, 9.0\times 10^{-1}Kg

Explanation :

According to the Einstein equation, the energy is equal to the product of mass and the square of the speed of light.

The mathematical expression is :

E=m\times c^2

where,

E = energy  released = 8.1\times 10^{16}J

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

m = mass lost = ?

Now put all the given values in the above formula, we get the mass lost in the reaction.

8.1\times 10^{16}J=m\times (3\times 10^8m/s)^2

8.1\times 10^{16}Kg.m^2/s^2=m\times (3\times 10^8m/s)^2

m=9.0\times 10^{-1}Kg

Therefore, the mass lost in this reaction will be, 9.0\times 10^{-1}Kg

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