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srose9625
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A student takes 0.45kg of ice. The ice is initally at -23'C. She heats the sample in an oven until the temp is 134'C.
a). What is the Q needed to heat the ice to its melting point?
b). What is the Q needed to change the solid ice into liquid water?
c). What is the Q needed to heat the liquid water to its boiling point?
d). What is the Q needed to change the liquid water to steam?
e). What is the Q needed to heat the steam to 134'C?
f). Draw a graph with the temp of the sample in Kelvin on y axis, and NRG absorbed in Joules by the sample on the x axis.
Equations of use:
Q=mc(change in T)
Q=mL
a) (.45kg) (4.2x10^3 J/kg) (23'C)=4.3x10^6 J
b) (.45kg) (3.3x10^5 J/kg) = 1.5x10^5 J
c). (.45kg) (3.3x10^5 J/kg) (100'C) = 1.2x10^7 J
I am guessing that water boils at 100'C. Would that be the right answer?
d) (.45kg) (2.3x10^6 J/kg) = 1.0x10^6 J
e). (.45kg) (3.3x10^5 J/kg) (134'C) = 1.2x10^7 J
OR
(.45kg) (2.3x10^6 J/kg) (134'C) = 1.4x10^8 J
f) I have ice drawn in a straight/horizontal line, then water drawn in a linear line followed by a straight/horizontal line, then steam in a linear line, then boiling in a straight/horizontal line.
a). What is the Q needed to heat the ice to its melting point?
b). What is the Q needed to change the solid ice into liquid water?
c). What is the Q needed to heat the liquid water to its boiling point?
d). What is the Q needed to change the liquid water to steam?
e). What is the Q needed to heat the steam to 134'C?
f). Draw a graph with the temp of the sample in Kelvin on y axis, and NRG absorbed in Joules by the sample on the x axis.
Equations of use:
Q=mc(change in T)
Q=mL
a) (.45kg) (4.2x10^3 J/kg) (23'C)=4.3x10^6 J
b) (.45kg) (3.3x10^5 J/kg) = 1.5x10^5 J
c). (.45kg) (3.3x10^5 J/kg) (100'C) = 1.2x10^7 J
I am guessing that water boils at 100'C. Would that be the right answer?
d) (.45kg) (2.3x10^6 J/kg) = 1.0x10^6 J
e). (.45kg) (3.3x10^5 J/kg) (134'C) = 1.2x10^7 J
OR
(.45kg) (2.3x10^6 J/kg) (134'C) = 1.4x10^8 J
f) I have ice drawn in a straight/horizontal line, then water drawn in a linear line followed by a straight/horizontal line, then steam in a linear line, then boiling in a straight/horizontal line.