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How much energy must be added to a 1-kg piece of gold with a specific heat of 130 J/(kg°C) to increase its temperature from 20° C to 100° C?
Wiki User
∙ 13y ago
The formula to calculate the heat energy to raise the temperature is
Q = m s (t2 - t1)
Here m- mass of the substance given as 1 kg.
s- specific heat capacity given as 900 J per kg per Celsius.
t1 initial temperature and t2 final temperature.
Plugging the values in the above expression we get,
Q = 1 x 900 x 80 = 72000 J or 72 kJ.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoYou've got this down to a simple case of multiplication already. How much energy is required? Why, 600 joules for each degree, per kilogram of granite. We only have one kilogram, so the only problem is the temperature rise.
The Temperature difference is (100-20) = 80 degrees celsius. 600 joules for each of the 80 degrees is a simple calculator problem, if you have one - 600*80.
If not, remember that you have, in effect, 6*10*10*8*10 which can be moved around to be 6*8*1000. Ignore the thousand, and do 6*8 - 48.
So we have 48*1000 joules. 1000 joules is one kilojoule, so that thousand we didnt use can just become a k -
We have 48kj of energy that need to be added.
Spelling this out so that you can use the same method in the future...
- You can use the formula Q=cm(delta)T to solve such problems.
- Q is the heat energy added, c is the specific heat, m is the mass and (delta)T is the change in temperature.
Wiki User
∙ 14y ago72,000,000 J or 72,000 kJ or 72 MJ (Mega Joules)
Specific heat is written as delta H * M * delta T (Change in heat * mass in grams * change in Temperature in Celsius or Kelvin)
So 900 J * 1000 g * 80 C = 72,000,000 J
Wiki User
∙ 13y ago10,400J
April Powers
48,000 J
Wiki User
∙ 15y ago10,400 j
Wiki User
∙ 13y ago10,400 J
Wiki User
∙ 12y ago48,000 J
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As heat energy is added to a liquid do the particles increase or decrease in movement?
As heat energy is supplied to a liquid, its temperature rises. The rise of temperature causes a rise in the kinetic energy of the particles; which happens when the speed of the particles increases.
How much energy must be added to a 2-kg of glass with a specific heat of 644 J kg to increase its temperature from 10oC to 50oC?
51,520 Joules must be added to increase it's temperature to 100 C.
If sand has a specific-heat capacity of 835 jkgC then how much energy must be added to a 2 kilogram pile of it to increase its temperature from 40 C to 50 C?
Q = m c ΔT Q = energy m = 2 kg c = 835 J / (kg C) ΔT = 10 C Q = 2 kg * 835 J / (kg C) * 10 C Q = 16700 J
Why do substance s expand when energy is added to them as heat?
When heat is added to a system, it increases the kinetic energy of the molecules. Increased K.E in system causes molecules to move further away from each other. This causes system to increase in volume. Significant increase in volume might not occur but at microscopic level it definitely changes.
Why does the pressure of a gas increase as its temperature increases?
Pressure is defined as the force and number of collisions the particles of gas have with the walls of its container. Temperature is defined as the average kinetic energy of particles of matter. What this means is that when you raise the temperature of a gas, you are raising the average kinetic energy of the particles by providing a source of heat. Because the particles have more kinetic energy, they move faster and more forcefully. Then the particles have more collisions with the container with more force--the definition of pressure.
Can thermal energy be added without an increase in temperature?
No, thermal energy is entirely energy added for heat.
How much energy must be added to a 2-kg piece of wood with a specific heat of 1760 JkgoC to increase its temperature from 10oC to 50oC?
140,800 j
Thermal energy added to a substance that is not changing state causes the substances temperature to do what?
To increase.
How much energy must be added to 1 kilogram piece of aluminum with a specific heat of 900 J to increase its temperature from 20 degrees Celsius to 100 degrees Celsius?
90,000
How much energy must be added to a 1 kg piece of glass with a specific heat of 644 J kgC to increase its temperature from 20 C to 100 C?
10,400 J
What happened to the kinetic energy of the particles in a sample of gas as the temperature of the sample increase?
The average Kinetic energy of the atoms in the sample will increase as the sample is heated.
How much energy must be added to a 1-kg piece of granite with a specific heat of 600 J/(kg°C) to increase its temperature from 20° C to 100° C?
48,000 J
What happens to temperature when energy is added as heat?
Either the temperature will increase, or it will remain the same. In the latter case, there is a phase change, as when ice melts.
What happens to molecules as energy is added and the temperature increases?
what happens to molecules as energy is added the temperature increses
As heat energy is added to a liquid do the particles increase or decrease in movement?
As heat energy is supplied to a liquid, its temperature rises. The rise of temperature causes a rise in the kinetic energy of the particles; which happens when the speed of the particles increases.
How the temperature of water changes when sugar is added to it.?
The temperature increase a bit.
How much energy must be added to an 2 kg piece of wood with a speific heat of 1760 j to increase it's temperature from 10 C to 50 C?
Specific heat is the amount of energy required to raise the temperature of one gram of a substance one degree celsius. Therefore the answer will be: 1760 * 2000 * 40 = 140,800,000
