If one serving of chips is 160 kcal/s, how many potatoe chips would you have to eat to equal 262kJ/mol? (272kJ/mol=energy difference)

I'm sorry, one serving of chips is equal to 160kcal

262 kJ/mol? per mol of what? And 272 kJ/mol = energy difference of what? And how many otato chips = 1 serving?

Well this was the original problem: The first excited state of Mg is reached by absorption of 457.1 nm light. Calculate the energy difference (kJ/mol) between the ground and excited states.

The energy difference (E) came out to be 262kJ/mol. So now, I need to find out how many potatoe chips would a person have to eat to obtain an energy difference of 262kJ/mol. 21 chips=1 serving

why do sodium chloride and sodium nitrate all impart the same color to the flame?

I assume the 272 is a typo. And you want to know how many potato chips = 262 kJ.

First, convert 160 kcal to Joules.
4.184 J/cal so
(160 kcal/serving) x (1000 cal/kcal) x (4.184 J/cal) x (1 kJ/1000 J) = ?? kJ/serving.

Then 262 kJ x (1 serving/?? kJ) = # servings.

Then # servings x (21 chips/serving) = # potato chips.

Jessica--If you have a question to ask, please go to the top of the page and click on Post a New Question. Then type your question and post. Chances are slim of getting an answer from a question that is piggy backed onto another question.

Thank you DRBob222! Is there an equation that you used?(so I can know for future reference)

No, I just used the unit factor method (dimensional analysis).

To calculate the number of potato chips required to equal 262 kJ/mol based on the given information, we need to convert kilocalories (kcal) to kilojoules (kJ) and determine the energy content per mole of potato chips.

First, we convert the 160 kcal/serving to kJ/serving. Since 1 kcal is equal to 4.184 kJ, we have:

160 kcal/serving * 4.184 kJ/kcal = 668.64 kJ/serving

Now, we need to find the energy content per mole of potato chips. We're given that the energy difference is 272 kJ/mol. Therefore, we can assume that 1 mole of potato chips contains 272 kJ.

Now that we have the energy content per serving (668.64 kJ/serving) and per mole (272 kJ/mol), we can determine the number of potato chips required to equal 262 kJ/mol.

262 kJ/mol / 272 kJ/mol = 0.963 potato chips

Since you cannot eat a fraction of a potato chip, you would need to round up to the nearest whole number. Hence, you would need to eat 1 potato chip.