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toxicsugar22
 one year ago
Calculate the amount of heat required to raise the temperature of a 39g sample of water from 5∘C to 20∘C.
toxicsugar22
 one year ago
Calculate the amount of heat required to raise the temperature of a 39g sample of water from 5∘C to 20∘C.

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olzha.y
 one year ago
Best ResponseYou've already chosen the best response.0you wrote from 5 to 20 so (205) = difference in temperature..delta T Q = mC(T2T1) here C is "specific heat capacity of water" = 4.18J/(C*g) Q = 39*4.18*15 ~ 2500J or 2.5 kJ (look carefully, I may made a mistake, but I'm pretty sure)

olzha.y
 one year ago
Best ResponseYou've already chosen the best response.0to convert from celsius to fahrenheit use this formula: C * (9/5) + 32 = F

toxicsugar22
 one year ago
Best ResponseYou've already chosen the best response.0An adult eats food whose nutritional energy totals approximately 2200 Cal per day. The adult burns 2000 Cal per day. If 1 lb of fat is stored by the body for each 14.6×10^3kJ of excess nutritional energy consumed, how long will it take this person to gain 1 lb?
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