The compound rx3 decomposes according to the equation 3rx3 ? r r2x3 3x2 in an experiment the following data were collected for the decomposition at 100°c. what is the average rate of reaction over the entire experiment

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Ответ:

carolinasoto

06.12.2020

Chemistry

$2.8977\times 10^{-4} g$ of mass is converted to energy.

Explanation:

Mass of 1 mole of carbon-11 = 11 g

Moles of carbon-11 in 1 gram :

$\frac{1 g}{11 g/mol}=0.0909 mol$

Energy released when 1 mol of carbon-111 undergoes positron emission: E

$E=2.87\times 10^{11} J$

Then energy released when 0.0909 moles of carbon-11 undergoes positron emission:

$E'=E\times 0.0909=2.87\times 10^{11} J\times 0.0909 mol=2.608\times 10^{10} J$

Let the mass converted into energy during the process be m

Using Einstein equation of energy:

E=mc^2

E = energy released

m = mass converted into energy

c = speed of the light

$2.608\times 10^{10} J=m\times (3\times 10^8 m/s)^2$

m = $2.8977\times 10^{-7} kg=2.8977\times 10^{-4} g$

$2.8977\times 10^{-4} g$ of mass is converted to energy.

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