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What is the number of calories given off by 500 grams of water cooling from 50 degrees Celsius to 20 degrees Celsius?
Wiki User
∙ 11y ago
The heat of fusion (aka enthalpy of fusion) of ice at 0 °C is about 79.72 cal/g.
The specific heat of water in the range from 30 °C to 0 °C is about 1 cal/g/°C.
The total energy that must be removed is thus:
20.0 g x[(0-30)°C x 1 cal/g/°C - 79.72 cal/g] = -2184 cal
in other words you must remove 2184 cal to take 20.0 g of water from liquid at 30 30 °C to solid (ice) at 0 °C.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoI will work in joules then convert.
q = mass * specific heat * change in temperature
q = (500 g H2O)(4.180 J/g*oC)(50o C - 20o C)
= 62700 Joules (1 calorie/4.184 Joules)
= 1.5 X 104 calories
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Wiki User
∙ 6y agoYou need to multiply together all of the following:* The mass in grams
* The temperature difference
* The specific heat of water
Wiki User
∙ 10y ago16,000
=200 (100-80)
Wiki User
∙ 13y ago200 calories
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Which is warmer 7 degrees Celsius or 3.5 degrees Celsius?
7 degrees Celsius is warmer than 3.5. The higher the number in degrees, the warmer it is!
How hot is 32 degrees Celsius in Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is about 90.68 degrees Fahrenheit.
0 degrees celsius how many degrees Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is 32 degrees Fahrenheit.
What is 135 degrees Celsius in Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is about 275 degrees Fahrenheit.135 degrees Celsius = 275 degrees Fahrenheit.
What is 41.3 Celsius in Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32 In this case, the answer is 111.74 degrees Fahrenheit.
What is the total number of calories of heat needed to raise to raise the temperature of the liquid water from 20 degrees Celsius to 30 degrees Celsius?
The number of calories required will depend on the mass of water which is to be heated.
Calculate the number of calories given off by 300 grams of water cooling from 30C to 20C?
Water releases 80 calories per gram per degree Celsius. 80 * 300 * 10 = 240000 calories, or 240 kilocalories.
How many calories of heat would it take to raise the temperature of 256 grams of water from 20 degrees to 99 degrees?
A calorie is the amount of heat you need to raise the temperature of one gram of water by one degree Celsius. Assuming you are raising the temperature of the water from twenty degrees Celsius to ninety-nine degrees Celsius, it would take 20,000 calories. To calculate this, subtract 20 from 99. This is the amount of degrees you need to raise the temperature of the water by. Then multiply that number by 256, the amount of water in grams. You should get 20,244 calories. In significant digits, your answer should be 20,000 calories.
Which is warmer 7 degrees Celsius or 3.5 degrees Celsius?
7 degrees Celsius is warmer than 3.5. The higher the number in degrees, the warmer it is!
Which is hotter 92 degrees Celsius or 92 degrees Fahrenheit?
Since Celsius degrees are larger than Fahrenheit degrees, above -40 degrees (where the scales coincide) any number in Celsius will be hotter than the corresponding number in Fahrenheit.
100 degrees Celsius is how many degrees in Fahrenheit?
Start by taking the number in Fahrenheit and subtracting 32. Then divide the number by 9, and then multiply it by 5. This is how you convert Fahrenheit to Celsius or use the equation C = (F - 32) × 5/9In this case, the answer is about 47.22 degrees Celsius.
What is larger a Celsius degree or a Fahrenheit degree?
1 Degree of Celsius is larger. The number of degrees Fahrenheit between Water freezing (32) and boiling(212) is 180 degrees. The number of degrees Celsius is 100 degrees. So the Celsius degree has more value.
Which is colder 40 Celsius or 0 Celsius?
0 degrees Celsius is a colder temperature than 40 degrees Celsius. 0 degrees Celsius is the freezing level for water. Any positive number above 0 degrees Celsius is a warmer temperature.
How hot is 32 degrees Celsius in Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is about 90.68 degrees Fahrenheit.
What is 74 degrees Celsius in f?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is about 165.2 degrees Fahrenheit.
What temperature in degrees Fahrenheit is equal to the reverse of that number in degrees Celsius?
16 Celsius = 61 Fahrenheit
0 degrees celsius how many degrees Fahrenheit?
Start by taking the number in Celsius and multiply it by 9. Then divide that number by 5, and then add 32. This is how you convert Celsius to Fahrenheit or use the equation F = (9/5)C + 32In this case, the answer is 32 degrees Fahrenheit.
