Question

You decide to eat some dry ice which is solid CO2 to burn off some calories. Calculate the number of food calories burned by your body when eating 34.5 g of dry ice at a starting temperature of -83.6 celsius.

Hints: Csp of solid CO2 is 1.26 J/g*celcius, Csp of gas CO2 is 0.830 J/g*celcius, delta Hsub= 26.0 KJ/mol, the sublimation point for CO2 occurs at -78.5 celsius, 1food calorie is 1000 calories, 1 calorie is 4.184 J.

Assume the dry ice is heated to body temperature 37 Celcius.

Answer 1

answered by: anonymous