# How much energy does it take to heat a room?

TOTAL ALL TRANSMISSION COEFFICIENTS (INVERSE OF R-VALUE) WALLS, WINDOWS, ETC., MULTIPLY SQUARE FOOTAGE OF EACH SURFACE BY U-VALUE, THEN MULTIPLY BY THE DELTA T (DIFF. BETWEEN (MORE)
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# How much energy is needed to evaporate 1g of water at room temperature?

1 Calorie per degree C. If room temp is 72 degrees C then 28calories to get to boiling then the it takes 540 calories to waterfrom liquid to gas, called the heat of vaporizati (MORE)

# The heat lost by the boiling water is equal to the heat gained by the room-temperature water How much heat was transferred in this process?

For this part you would use the formula Q equals mcT. Q is energyin joules, m is for mass of the water that is in grams, c is theheat of water, and T is the temperature change (MORE)

# How much heat transfer is required to freeze 2. 25 kg of water that is at a temperature of 0 degrees Celsius?

None. At 0 degrees Celsius the water is already frozen. Roger. that's wrong the energy required is 754 kJ but i don't know how to work it out

# A 38 kg block of lead is heated from 26 degrees Celsius to 180 degrees Celsius how much heat energy does the block of lead absorb to increase its temperature this much?

The specific heat of lead is 0.0305 K cal/kg deg C. The heat absorbed will be 38x(180-26)x0.0305 = 178.5 Kcal = 746.1 K joules
In Physics

# How much heat energy is required to raise the temperature of 20 kg of water from o c to 35 c?

Nominally 700,000 calories, or about 2,928,800 joules. (That's a lot ! It's enough energy to lift a ton of gravel more than 1,000 feet straight up off the ground.)

# What is the amount of heat required to raise the temperature of 1.0 gram of water to 1.0 degree Celsius?

The necessary heat is 1 calorie; in the SI 1 cal (at 20 0 C) = 4,182 J; J is the symbol of joule.

# How much heat energy must be added to 1 kg of silver to change its temperature from -40 degrees C to -20 degrees C?

q = mass * specific heat * change in temperature 1 kg silver = 1000 grams q = (1000 g Ag)(0.237 J/gC)[(- 40 o C) - (- 20 o C)] = - 4.7 X 10 3 Joules =====
In Physics

# How much heat energy is necessary to heat 1.0 kg of water from room temperature of 20 degrees Celsius to its boiling point?

The heat capacity of water is approximately 1 cal/g/Â°C or 1 kcal/kg/Â°C. The boiling point of water is 100 Â°C so taking it from 20 Â°C boiling point means taking i (MORE)
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# How much heat must be added to 1.0 kg of water at 0 degrees Celsius to convert it into 1.0 kg of water at 100 degrees Celsius?

How much heat must be added to 1.0 kg of water at 0 degrees Celsiusto convert it into 1.0 kg of water at 100 degrees Celsius?