Question

A chemist burns a serving of peanuts in a calorimeter and sees that 150,000 J of energy is released. What should the information on the nutritional label say? (1 Calorie = 1,000 calories; 1 calorie = 4.186 J)

A. 35.8 calories

B. 35.8 Calories

C. 3,580 Calories

D. 3,580 J

***i think it is 35.8, but idk the difference between Calories and calories... please explain??? and show how to get to it?? I'm not too sure... thank youuu!!

Answer 1

cuz i did this..

15000 J/ 4.186 J =35833.73 x 1000= 35.833731
which equals about 35.8

??? did i do that right?? but idk the difference b/w Calories (with a capital C) and calories (with a lower case c) ???

Answer 2

1000 calories = 1 Calorie (or 1 kilo calorie)...yeah i know, it's confusing

Answer 3

why they can't just stick with kilo calorie, we'll never know

Answer 4

wait so do we go by calories?? Or kilo calories??

Answer 5

do europe and all the other countries use kilo calories??

Answer 6

well if you say "1 kilo calorie", then you're also saying "1 Calorie" (with a capital C)

Answer 7

wait so a normal person should only consume like 2 kilo calories, or 2000 calories?? according to nutrition facts and stuff??
(well i think i consume way more than 2000 calories, but oh well haha...)

Answer 8

i can just exercise (which i do!!) to burn it off or whatever hahaa :D

Answer 9

2000 Calories, yes

Answer 10

yeah like I said, the notation is very confusing

Answer 11

ohhh okay :) thanks :) so is the US the only country that uses calories??

Answer 12

hmm probably, wouldn't be surprised lol

Answer 13

ohh okay haha :) sooooo how do i solve this problem tho?? was i right tho?? was it 35.8 ???

Answer 14

if so, idk if its Calories or calories :/

Answer 15

you should have this

15000 J/ 4.186 J =35833.73

then you divide (not multiply) by 1000 to get 35.8 Calories

Answer 16

35833.73 calories = 35.8 Calories

Answer 17

ohhhh so my answer is B. 35.8 Calories ???
ooh and yeah divide hahaa not multiply lol :)

Answer 18

yes

Answer 19

ohh okay thank you :)

Answer 20

rule is little c calories are smaller (cause of the small c) so there are more of them in the same amount of big C calories

Answer 21

ohh okay haha thanks :) and thanks for clarifying the whole Calorie and calorie thingy :)

Answer 22

np