Calculate the shortest wavelength of light capable of dissociating the Br–I bond in one molecule of iodine monobromide if the bo
nd energy, or bond dissociation energy, is 179 kJ/mol .
1 answer:
Answer: 6.7*10^-7 m
Explanation:
The full explanation is shown in the image attached. The energy of the photon is obtained by dividing the bond energy by the Avogadro's number. Using the Plank's equation, we cash obtain the frequency or wavelength of radiation required by substituting into the given equation appropriately.
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This question is an incomplete question, here is a complete question.
Perform the following calculation. Report the answer using the proper number of significant figures.
Answer : The answer will be,
Explanation :
Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
The rule apply for the multiplication and division is :
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
The rule apply for the addition and subtraction is :
The least precise number present after the decimal point determines the number of significant figures in the answer.
The given expression is,
In the given expression, 1.012 has 4 significant figures, 0.025456 has 5 significant figures and 0.0115 has 3 significant figures. From this we conclude that 3 is the least significant figures in this problem. So, the answer should be in 3 significant figures.
Thus, the answer will be