Interested to Buy Any Domain ? << Click Here >> for more details...
Question 72 - (a) According to United States Department of Agriculture (USDA) (http://ndb.nal.usda.gov/ndb/search/list, accessed 12 August 2016), 100 g of potatoes generate 77 kcal of energy. For raw tomatoes, 111 g have 18 kcal of energy. Question : How much energy will one gain if 150 g of heated potatoes are eaten with 200 g of raw tomatoes? (b) If 1 Calorie = 1 food Calorie = 1 kilocalorie and 1000 calories = 1 food Calorie, then how many Calories are there in 9600 calories? (c) According to a food package of potato chips, 210 Calories are produced per serving size of 34 g. In actual experiment of food calorimetry lab, 1.75 g of potato chips, when burnt, will produce 9.6 Calories. For each serving size of potato chip, find the difference of Calories between the actual experimental value and the value stated on the food package. (d) The specific heat of water is c = 1 cal / (g.K) where cal is calory, g is gram and K is Kelvin. Then what is the temperature rise of water, in degree Celsius, when 150 g of water is heated by 9600 calories of burning food?
- 1 Answers
- 2915 Views
- I also Faced
- E-Mail Answers
Answer Posted / kang chuen tat (malaysia - pen
Answer 72 - (a) Energy gained = 150 g (77 kcal / 100 g) for potatoes + 200 g (18 kcal / 111 g) for tomatoes = 147.93 kcal. (b) 1 food Calorie = 1 Calorie = 1000 calories, then 9600 calories is 9600 calories (1 Calorie / 1000 calories) = 9.6 Calories. (c) Calories per serving size in actual experiment = 34 g (9.6 Calories / 1.75 g) = 186.51 Calories. Then difference of Calories = 210 - 186.51 = 23.49. (d) Temperature difference T in degree Celsius is same as Kelvin. Then c = 1 = 9600 calories / [ (150 g) T ] or T = 9600 / 150 = 64 degree Celsius. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What are the specialized crushing methods?
How can you quickly estimate the horsepower of a pump?
can you explain about the design calculations and procedure of boiler
When should one be concerned with the tube wall temperature on the cooling waterside of a shell and tube exchanger?
What factors go into designing the vapor space of kettle type reboiler?
Explain the functioning of a three-way catalytic converter.
hello sir..iam keen to sit for iocl interview..please forward sample iocl questions to my id: kunal_kv06@yahoo.co.in
For what ration of Lengh/Dia. of tank (Jacketed tank), maximum heat transfer area is available?
Corenuts technology interview questions
What are the criteria’s involved in choosing mass balances for components?
Is there a handy way to determine if a horizontal pipe is running full if the flow rate is known?
Why do we apply on iron articles?
How can hexavalent chromium be removed from aqueous waste streams?
How can you prevent bridging in a dilute phase pneumatic conveying system?
I want previous year question paper of ONGC for chemical engg.
