Homework Answers
given
volume of gasoline = 1.8 gallons =6813.74 ml
density =0.74 g/ml
Therefore mass of gasoline present = volume *density
= 6813.74 ml*0.74 g/ml = 5042.1676 g
1 g gasoline produce heat energy = 9.8 KCal
5042.1676 g gasoline produce heat energy = 5042.1676 *9.8 kcal
=49413.24 Kcal
heat energy produced =49413.24 Kcal
**************************************
Use formula q= mcdT
where q= heat energy = 1488 j
m= mass = 28 g
c= specific heat = 0.39 j/gC
there fore change in temperature dT = q/mc
= 1488 j/28 g*0.39 j/gC = 136.26 C
Change in temperature =136.26 C
***************
both solved ,kindly upvote.
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