In fireworks, the heat of the reaction of an oxidizing agent, such as kclo4, with an organic compound excites certain salts, which emit specific colors. strontium salts have an intense emission at 641 nm. what is the energy (in kj) of this emission for 5.33 g of the chloride salt of strontium? assume that all the heat produced is converted to emitted light. enter to 2 decimal places.

6.27 kJ

Explanation:

You need to do a conversion between nm to kJ/mol:

If you express the wavelength in meter resulting energy will be in joules so you continue with the conversion:

With 641 nm:

Now to calcule the energy released by 5.33 g of SrCl2 (M=158.53 g/mol) you take the previous calculated energy:

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

since electrons are negative the answer is neagtaive