Help PLEASE!! Will mark Calculate the total energy in 1.5 x 10^13 photons of gamma radiation having wavelength = 3.0 x 10^-12 m. Need to show ALL work.

E = 0.994 J

Explanation:

Given that,

Total no of photons,

The wavelength of gamma radiation,

We need to find the total energy in given no of photons. The formula for the energy of a photon is given by :

For n photons,

So, the total energy is 0.994 J.

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