What color of light is being emitted when the electron drops from n= 6 to n=2 as shown
in the scenario? explain your reasoning, based on what you know about the change in
energy level, and the relationship between energy and wavelength of light, and the
relationship between the color and wavelength of light.

b is the correct answer

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answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol