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How many kilojoules are needed to raise the temperature of 305 g of ethanol from 25 degrees C to 97 degrees C?
Wiki User
∙ 8y ago
To answer this question, you need ethanol's specific heat. I looked it up for you, and it's 2.46, so the equation is: q (heat transfered) = 2.46 x 305 x 72 (spec. heat x mass x temp. change.) The answer is 54000 joules, or 54 kilojoules.
Wiki User
∙ 8y ago
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How much heat energy in kilojoules is required to convert 68.0 g of ice at 18.0 to water at 25.0?
It requires 1 calorie to increase 1 mL of water by 1 degree Celsius. In 68 grams of water, there are 68 mL. The change in temperature is 7 degrees, so 476 calories are needed. 1 calorie has 4.184 joules, hence 1.992 kJ are needed.
What is the air temperature when it snows or sleets?
The air temperature needed for frozen precipitation to form is 32 degrees Fahrenheit.
What is needed for water to change from a solid to a liquid?
A room temperature ubove 0 degrees centigrade.
Does ice melt and boil at specific tempurtures?
Yes, usually water will melt at anything above 0 degrees celsius or boil at 100 degrees. However pressure and altitude can change the required temperature needed for boiling/melting. The higher pressure the lower temperature required and vice versa The higher altitude the less temperature needed
What temp does a kettle need to be to cause evaporation?
the temperature that is needed to boil water is 100 degrees Celsius or over.
What is the minimum number of kiloJoules needed to change 40.0 grams of water at 100ºC to steam at the same temperature and pressure?
90.4
A pitcher containing 0.60L of water at 7C is removed from the refrigerator How many kilojoules are needed to warm the water to a room temperature of 29C?
32200
How many kilojoules of energy are necessary to raise the temperature of 3 kilograms of cast iron from 30 degrees celsius to 120 degrees celsius?
I will use this formula. Some conversion will be required. ( I only know specific heat iron in J/gC ) q(Joules) = mass * specific heat * change in temperature Celsius 3 kilograms cast iron = 3000 grams q = (3000 g)(0.46 J/gC)(120 C - 30 C) = 124200 Joules (1 kilojoule/1000 joules) = 124.2 kilojoules of energy needed ===========================
The number of kilojoules needed to raise the temperature of 32.0 g of water from 12.0 degree centigrade to 54.0 degree centigrade is?
q(Joules) = mass * specific heat * change in temperature q = 32.0 grams H2O * 4.180 J/gC *(54.0 C - 12.0 C) = 5617.92 Joules this is, of course 5.62 kilojoules
What Bond energy needed to break or create bonds is measured in units is called?
Kilojouls Apex Finchy
How much heat is needed to vaporize 1.25 kg of ethanol?
The boiling point of ethanol is 78 C but it can evaporate slowly at just room temperature. You can set it on fire and it will vaporize even more quickly.
How much heat energy in kilojoules is required to convert 68.0 g of ice at 18.0 to water at 25.0?
It requires 1 calorie to increase 1 mL of water by 1 degree Celsius. In 68 grams of water, there are 68 mL. The change in temperature is 7 degrees, so 476 calories are needed. 1 calorie has 4.184 joules, hence 1.992 kJ are needed.
What is the air temperature when it snows or sleets?
The air temperature needed for frozen precipitation to form is 32 degrees Fahrenheit.
How much energy is needed to raise the temperature of 2.0 g of water 5.0 degrees C?
The needed energy is 10 calories.
What is needed for water to change from a solid to a liquid?
A room temperature ubove 0 degrees centigrade.
What is needed to change water from a solid to a liquid?
A room temperature ubove 0 degrees centigrade.
How much heat is in fresh water?
It would depend on the temperature of the water, or average kinetic energy. (KE) However, what you may be looking for is how much heat is needed to raise the KE, or temperature, of water. 4.184 kilojoules per gram is the heat required to raise the temperature of water 1 degree Celsius.
