Solve. A camper heats 30.0L of water to boiling to get hot water for bathing. What volume of water from a 15°C stream must he then add to get the bath water to 45°C? (Neglect any losses.)
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A camper heats 30.0L of water to boiling to get hot water for bathing. What volume of water from a 15°C stream must he then add to get the bath water to 45°C? (Neglect any losses.)
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- One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at 25.0C is allowed to expand to 3.00 times its original volume, its final pressure is 1.07 106 Pa. (a) What is the initial temperature of the gas in Kelvin? (b) What is the final temperature of the system? (See Section 10.4.)Aluminum has a thermal conductivity of 200 W/(m· C°). The bottom of an alu- minum pot is 2.14 mm thick, has area 0.0314 m2, and sits on a burner whose tem- perature is 280°C, and the pot contains boiling water at 100°C. 4. How much heat is conducted through the aluminum in 105 seconds? 5. How much water boils off in that 105 seconds?16. What is the amount of heat required to melt 100 g of ice completely at -10°C? (5) (a) 6048 cal _(b) 4680 cal (c) 8640 cal (d) 8064 cal 17 A 21 container holds 3 moles of N. at 323 K What is the pressure of the gas inside the container?
- A). How much heat transfer (in kcal) is required to raise the temperature of a 0.550 kg aluminum pot containing 2.00 kg of water from 20.0°Cto the boiling point and then boil away 0.700 kg of water? B). How long (in s) does this take if the rate of heat transfer is 600 W (1 watt = 1 joule/second (1 W = 1 J/s))?A 2kg block of aluminium is heated to 600°C. It is placed in a sink containing 1.5 litresof water at 15°C. Assuming all the water is brought to the boil rapidly, calculate themass of water which boils off. Ignore losses to the sink.S.L.H. of Vaporisation of water = 2257kJ/kg; S.H.C. Aluminium = 950J/kgºC.PLEASE ANSWER ASAP. I NEED THE ANSWER ASAP. To condition the air in an office building in the winter, 1000 cubic meter of moist air per hour at 101 kPa and 22 Celsius with a dew point of 11 Celsius enter the system. The air leaves the system at 98 kPa with a dew point of 58°C. How many kilograms water vapor are added to each kilogram of wet air entering the process?
- A rectangular window in a home has a length of 1.5 m and a height of 0.80 m. If the window allows heat to escape from the home at a rate of 2,000 watts, how thick must the window be if the inside temperature of the home is 220 C and the outside temperature is 3.00C? (Assume that the coefficient of thermal conduction of glass is 0.80 W/mK.) a. 7.1 mm b. 124 mm c. 9.1 mm d. 8.1 mm e. 11 mmHow much energy is required to raise the temperature of 0.25 kg of water from 20.°C to 80.°C? Answer in J. (What must i do to solve this?)21.0 g of copper pellets are removed from a 300C oven and immediately dropped into 70.0 mL of water at 17.0C in an insulated cup. copper = 385 (J/kg K) water = 4190 (J/kg K) What will the new water temperature be? Express your answer with the appropriate units.
- How much heat Q, in Joules, is required to warm up 0.5 kg of water from 20 °C to 30 °C ? (Water specific heat is 4,190 J/kg°C) 4186 J O 20,950 J 2000 J O 125,580 J Question 5 Add 100 joules of heat to a system that does 60 joules of work. Determine the change in internal energy. OJ. 100 J.It took ten minutes to warm 250g of water at zero degrees (but not frozen) up to 21degrees Celsius. If the heat is being transfered to the water at a consistent rate, what heating power (P) is being applied to the water? (numerical value) . For the water, use a specific heat =4190 J/kg/C a. 12.3J b. 39.1W c. 12.3W d. 36.7WAn aluminum-alloy rod has a length of 10.000 cm at 20.000 oC and a length of 10.015 cm at the boiling point of water. Analyze the rod using linear thermal expansion and i. Determine the length of the rod at the freezing point of water? ii. Determine the temperature if the length of the rod is 10.009 cm?