A 45.0 g block of metal at 99.5 °C was dropped into 150.0 g of water at 24.00 °C. The temperature of the mixture rose to 26.40 °C. The specific heat of water is 4.184 J/g°C. Determine the specific heat of the metal. tor initially
A 45.0 g block of metal at 99.5 °C was dropped into 150.0 g of water at 24.00 °C. The temperature of the mixture rose to 26.40 °C. The specific heat of water is 4.184 J/g°C. Determine the specific heat of the metal. tor initially
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 104SCQ: Prepare a graph of specific heat capacities for metals versus their atomic weights. Combine the data...
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i dont think im on the right track for question 2
![1. The specific heat of aluminum is 0.900 J/°C g.
Problems:
The specific heat of aluminum is 0.900 J/°C g.
d. How much heat energy is needed to raise the temperature of a 8.50 x 102 g block of aluminum
from 22.8 °C to 94.6 °C?
b. Calculate the molar heat capacity of aluminum.
A 45.0 g block of metal at 99.5 °C was dropped into 150.0 g of water at 24.00 °C. The temperature
of the mixture rose to 26.40 °C. The specific heat of water is 4.184 J/g°C. Determine the specific
heat of the metal.
A 200 g piece of lead (0.0305 cal/g K) is heated to 90 °C and dropped into 500 g of water, initially
at 20 °C. Neglecting the heat capacity of the container, find the final temperature of the lead and
water. (H2O: 1.00 cal/g-K)
4.
A 30 g piece of ice, falling off the space shuttle through the Earth's atmosphere, reached a cons
terminal velocity of 8 m/s. Assuming no heat is lost to the surroundings, how far will it have to
in order for all the ice to be melted before it hits the ground? The latent heat of fusion for ice i
80 cal/g.
[Ans: 34 km]
5.
When steam condenses to liquid water, 2.26 kJ of heat is released per gram. The heat from
of air at normal pressure is 1.015 J/g.°C. What is the change in air temperature, assuming
of the air in the room, in g/cr
of steam is used to heat a room containing 6.44 x 104 g of air (20 ft x 12 ft x 8 ft). The specit
2.
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Transcribed Image Text:1. The specific heat of aluminum is 0.900 J/°C g.
Problems:
The specific heat of aluminum is 0.900 J/°C g.
d. How much heat energy is needed to raise the temperature of a 8.50 x 102 g block of aluminum
from 22.8 °C to 94.6 °C?
b. Calculate the molar heat capacity of aluminum.
A 45.0 g block of metal at 99.5 °C was dropped into 150.0 g of water at 24.00 °C. The temperature
of the mixture rose to 26.40 °C. The specific heat of water is 4.184 J/g°C. Determine the specific
heat of the metal.
A 200 g piece of lead (0.0305 cal/g K) is heated to 90 °C and dropped into 500 g of water, initially
at 20 °C. Neglecting the heat capacity of the container, find the final temperature of the lead and
water. (H2O: 1.00 cal/g-K)
4.
A 30 g piece of ice, falling off the space shuttle through the Earth's atmosphere, reached a cons
terminal velocity of 8 m/s. Assuming no heat is lost to the surroundings, how far will it have to
in order for all the ice to be melted before it hits the ground? The latent heat of fusion for ice i
80 cal/g.
[Ans: 34 km]
5.
When steam condenses to liquid water, 2.26 kJ of heat is released per gram. The heat from
of air at normal pressure is 1.015 J/g.°C. What is the change in air temperature, assuming
of the air in the room, in g/cr
of steam is used to heat a room containing 6.44 x 104 g of air (20 ft x 12 ft x 8 ft). The specit
2.
3.
Transcribed Image Text:Cs.Cうこ
て Mm- 4s.0a Tiz 99.5℃
MwE150.0a Ti=Z4.00
Csこ 4.184
TE =
26.40°C
-145.0S((s)c26. )
Cs)(26.4-9a.5
1-99.5)-158-004.184Y26.4-て4.00)
cs
1S06ペ.ム.184 2.4
45.0g-(-73.1)
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