The following table lists the specific heat capacities of select substances. PAR

Question

The following table lists the specific heat capacities of select substances. PART A + PART B

± Heat Capacity Part A I he to owing table lists the speciic heat capacties ot select Water (2850 g ) is heated until t just begins to boil. If the water absorbs 4.89x105 J of heat in the process, what was the inital temperature of the water? substances SubstanceJ/g"C) silver copper Specific heat capacity Express your answer with the appropriate units. 0.235 0.385 0.449 0.903 2 42 alue Units alunminum cthanol vater Submit My Answers Give Up Part B An unknown substance nas a mass ot gWhenthe sustance absorbs 1 D17x10 is he most likey idenlity of he subslance? ot heat, the temperature of the substance is rased trem 25 a Cto 45D Whst Hinta copper iron aluminum O water Silver Submit My Answers Give Up

Explanation / Answer

A)

we have:

Q = 489000 J

m = 2850 g

C = 4.184 J/g.oC

Tf = 100 oC

we have below equation to be used:

Q = m*C*(Tf-Ti)

489000.0 = 2850.0*4.184*(100.0-Ti)

100.0 - Ti = 41.0 oC

Ti = 59.0 oC

Answer: 59.0 oC

B)

we have:

Q = 101.7 J

m = 11.3 g

Ti = 25 oC

Tf = 45 oC

we have below equation to be used:

Q = m*C*(Tf-Ti)

101.7 = 11.3*C*(45.0-25.0)

C = 0.45 J/g.oC

This is iron

Answer: iron

Feel free to comment below if you have any doubts or if this answer do not work. I will edit it if you let me know

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