Question
In: Physics
When you take a bath, how many kilograms of hot water (47.3 °C) must you mix...
When you take a bath, how many kilograms of hot water (47.3 °C) must you mix with cold water (13.3 °C) so that the temperature of the bath is 36.0 °C? The total mass of water (hot plus cold) is 195 kg. Ignore any heat flow between the water and its external surroundings.
Solutions
genius_generous answered 4 weeks agoRelated Solutions
judy places 0.150kg of boiling water at 100° C in a thermos bottle. how many kilograms...
judy places 0.150kg of boiling water at 100° C in a
thermos bottle. how many kilograms of ice at -12.0°C must judy add
to the thermos so that the equilibrium temperature of the water is
75.0°C?
How many grams of water at 25°C must be added to a Dewar flask (isolated system)...
How many grams of water at 25°C must be added to a Dewar flask
(isolated system) containing 20 g of ice at -5°C to
satisfy the conditions in (a) through (d)? Compute the entropy
change in each case.
Predict the sign of ΔS in each case before doing the
calculation.
a) The final temperature is -2°C; all the water freezes.
b) The final temperature is 0°C; half the water freezes
c) The final temperature is 0°C; half the ice melts...
How many grams of glucose, C6H12O6, must be dissolved into 394.7 g of water at 100°C...
How many grams of glucose,
C6H12O6, must be dissolved into
394.7 g of water at 100°C to reduce the pressure of water above the
solution to 686.4 mm Hg? The solute is a non-volatile compound.How
many grams of glucose, C6H12O6,
must be dissolved into 394.7 g of water at 100°C to reduce the
pressure of water above the solution to 686.4 mm Hg? The solute is
a non-volatile compound.
A copper ball of temperature 100 °C is immersed to a water bath of 50 °C....
A copper ball of temperature 100 °C is immersed to a water bath
of 50 °C. After 10 minutes the temperature of the ball is 80 °C and
the temperature of the water is 60 °C. You may assume that Newton’s
Law of Cooling is obeyed and all the heat lost by the ball is
absorbed by the water. Find the equilibrium temperature of the ball
as a function of time.
How many kilograms of 0°C ice needs to be added to 4 kg of 80°C tea...
How many kilograms of 0°C ice needs to be added to 4 kg of 80°C
tea to change the temperature to 10°C? Assume tea has the same
specific heat as water.
How many kilograms of water can be evaporated from a 1 m^2 surface in a lake...
How many kilograms of water can be evaporated from a 1
m^2 surface in a lake on a hot summer day, if it is assumed that
the limiting factor is solar insolation (1000 W/m^22). Assume that
the length of the day is 8 hours and that the air and water temp
are at 40 degrees Celsius. B. What volume of air is needed to hold
this much water vapor at 40 oC. C. When the sun sets, the air
temperature...
When you take the effort to dispute a parking ticket, you must take into account the...
When you take the effort to dispute a parking ticket, you must
take into account the cost of your time, which is called:
explicit cost
accounting cost
economic cost
opportunity cost
When making decisions, welfare is maximized when:
marginal cost equals opportunity cost
marginal cost equals marginal benefit
marginal cost equals total benefit
marginal cost equals total cost
If you paid $18 for an “unlimited play” pass at Boomers Fun
Center, what is the marginal cost of the 3rd round...
A hot tub is filled with 410 gal water. How many kilocalories are needed to heat...
A hot tub is filled with 410 gal water. How many kilocalories
are needed to heat the water from 67 ∘F to 103 ∘F? (Assume that
1cal=4.184J, the specific heat of water is 4.184 J/g∘C.)
A 91.70 g sample of metal was heated in a boiling water bath at 99.4 °C....
A 91.70 g sample of metal was heated in a boiling water bath at
99.4 °C. The hot metal was then placed in a calorimeter, with heat
capacity 39 J/K containing 45.0 g of water. Analysis of the
thermogram showed the initial temperature to be 21.1°C, the final
temperature to be 42.3°C.
4.91 g of LiCl was dissolved in 50.0 mL of water in the same
calorimeter as in problem (above)
1. Analysis of the thermogram showed the initial temperature...
A 91.70 g sample of metal was heated in a boiling water bath at 99.4 °C....
A 91.70 g sample of metal was heated in a boiling water bath at
99.4 °C. The hot metal was then placed in a calorimeter, with heat
capacity 39 J/K containing 45.0 g of water. Analysis of the
thermogram showed the initial temperature to be 21.1°C, the final
temperature to be 42.3°C.
Calculate Delta T water
Calculate Delta T metal
Calculate . CsPmetal
Calculate M (there's a - above the M.. don't know what that
means) metal
What is the...
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