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Phoenix [80]
3 years ago
6

Sometimes scientists make a mistake, or ___, and need to do the experiment again?

Physics
1 answer:
Vlad1618 [11]3 years ago
5 0
Sometimes scientists make a mistake or Miscalculate and need to do the experiment again. 
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Pc13 is a compound used to make pesticides. A reaction requires that 96.7 kg of pc13 be raised from 31.7 degrees celcius to 69.2
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Answer:

Energy required = 3169.34 Joules.

Explanation:

The quantity of energy (Q) required can be determined by;

Q = mcΔθ

Where: m is the mass, c is the specific heat and Δθ is the change in temperature.

But, m = 96.7 kg, c = 0.874 J/(kg^{o} C), T_{2} = 69.2^{o} and T_{1} = 31.7^{o}.

So that,

Q = mc(T_{2} - T_{1})

   = 96.7 x 0.874 x (69.2^{o} - 31.7^{o})

  = 96.7 x 0.874 x 37.5

  = 3169.3425

Q = 3169.34

   = 3.2 KJ

The amount of energy required is 3169.34 Joules.

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The measurement of sound is in decibels.
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<h3>What is a biosphere?</h3>

A biosphere can be defined as the part of the earth that supports life. These include :

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  • desert,

  • forest,

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The flow of energy through the biosphere includes

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