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A beaker contains 200g of water. The heat capacity of the beaker is equal to that of 20g water the initial temperature of water in the beaker is 20 degree celsius.if 440g of hot water at 92 degree Celsius is poured in, the final temperature (neglecting radiation loss) will be nearly.?.the answer for this is 68 degree celsius . Please solve this .?
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A beaker contains 200g of water. The heat capacity of the beaker is eq...
Heat released by the hot water=Heat accepted by the cold water+Heat accepted by the beaker

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A beaker contains 200g of water. The heat capacity of the beaker is eq...
Given information:
- Initial mass of water in the beaker = 200g
- Heat capacity of the beaker = Heat capacity of 20g water
- Initial temperature of the water in the beaker = 20 degrees Celsius
- Mass of hot water poured in = 440g
- Temperature of hot water poured in = 92 degrees Celsius

Calculating the heat gained by the water in the beaker:
The heat gained by the water in the beaker can be calculated using the formula:

Q = mcΔT

Where:
Q = Heat gained
m = Mass of the substance
c = Specific heat capacity of the substance
ΔT = Change in temperature

In this case, the mass of water in the beaker is 200g, and the initial temperature is 20 degrees Celsius. The specific heat capacity of water is 4.18 J/g°C.

Q1 = 200g * 4.18 J/g°C * (Tf - 20°C)
Q1 = 836(Tf - 20) J

Calculating the heat gained by the hot water:
Similarly, we can calculate the heat gained by the hot water poured into the beaker. The mass of the hot water is 440g, and the initial temperature is 92 degrees Celsius.

Q2 = 440g * 4.18 J/g°C * (Tf - 92°C)
Q2 = 1839.2(Tf - 92) J

Since the heat gained by the water in the beaker is equal to the heat gained by the hot water, we can equate the two equations:

836(Tf - 20) = 1839.2(Tf - 92)

Simplifying the equation:

836Tf - 16720 = 1839.2Tf - 168998.4

1003.2Tf = 152278.4

Tf ≈ 152278.4 / 1003.2

Tf ≈ 151.63 degrees Celsius

Therefore, the final temperature of the water in the beaker, neglecting radiation loss, will be approximately 151.63 degrees Celsius.
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Importance of high specific heat capacity of water for life Specific heat capacity of a substance is the amount of heat required to raise the temperature of that substance by 1 K. It is expressed in the units J/ (kg K). A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. Water has the highest known specific heat capacity. Its specific heat capacity is 4.186 K J/ (kg K) i.e. to raise the temperature of 1 kg of water by 1 Kelvin it requires 4.186 KJ of heat. For comparison sake, Copper requires only 385 Joules of heat to raise 1 kilogram of copper by 1 Kelvin. It also interesting to know that the specific heat capacities in two other phases of water (i.e. ice and water vapour) are less than this. High specific heat of water is mainly due to the presence of a large number of hydrogen bonds between molecules of water. On a beach on a sunny day, it is noticed that the sand is often quite hot to walk on, but the water is always cool, even in the shallows. This is because sand has a lower specific heat capacity than that of water. Sand takes less energy to raise the temperature by one degree. Because water has a high specific heat capacity, it requires more energy to raise the temperature by one degree. Since the sun puts same rate of energy on water and sand, which heats up sand more quickly and water more slowly. Water covers around 70% of the Earth's surface and its high specific heat plays a very important role to sustain life in the earth. It is able to absorb a lot of heat without a significant rise in the temperature. When temperatures decrease, the heat which is stored is released, restraining a rapid drop in temperature. The combined effect is the buffering of heat. A relatively constant temperature without sudden rise and drop is essential to sustain life. Hence water is important for life.Q. Which statement is false?

Importance of high specific heat capacity of water for life Specific heat capacity of a substance is the amount of heat required to raise the temperature of that substance by 1 K. It is expressed in the units J/ (kg K). A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. Water has the highest known specific heat capacity. Its specific heat capacity is 4.186 K J/ (kg K) i.e. to raise the temperature of 1 kg of water by 1 Kelvin it requires 4.186 KJ of heat. For comparison sake, Copper requires only 385 Joules of heat to raise 1 kilogram of copper by 1 Kelvin. It also interesting to know that the specific heat capacities in two other phases of water (i.e. ice and water vapour) are less than this. High specific heat of water is mainly due to the presence of a large number of hydrogen bonds between molecules of water. On a beach on a sunny day, it is noticed that the sand is often quite hot to walk on, but the water is always cool, even in the shallows. This is because sand has a lower specific heat capacity than that of water. Sand takes less energy to raise the temperature by one degree. Because water has a high specific heat capacity, it requires more energy to raise the temperature by one degree. Since the sun puts same rate of energy on water and sand, which heats up sand more quickly and water more slowly. Water covers around 70% of the Earth's surface and its high specific heat plays a very important role to sustain life in the earth. It is able to absorb a lot of heat without a significant rise in the temperature. When temperatures decrease, the heat which is stored is released, restraining a rapid drop in temperature. The combined effect is the buffering of heat. A relatively constant temperature without sudden rise and drop is essential to sustain life. Hence water is important for life.Q. Specific heat capacity of water is

Importance of high specific heat capacity of water for life Specific heat capacity of a substance is the amount of heat required to raise the temperature of that substance by 1 K. It is expressed in the units J/ (kg K). A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. Water has the highest known specific heat capacity. Its specific heat capacity is 4.186 K J/ (kg K) i.e. to raise the temperature of 1 kg of water by 1 Kelvin it requires 4.186 KJ of heat. For comparison sake, Copper requires only 385 Joules of heat to raise 1 kilogram of copper by 1 Kelvin. It also interesting to know that the specific heat capacities in two other phases of water (i.e. ice and water vapour) are less than this. High specific heat of water is mainly due to the presence of a large number of hydrogen bonds between molecules of water. On a beach on a sunny day, it is noticed that the sand is often quite hot to walk on, but the water is always cool, even in the shallows. This is because sand has a lower specific heat capacity than that of water. Sand takes less energy to raise the temperature by one degree. Because water has a high specific heat capacity, it requires more energy to raise the temperature by one degree. Since the sun puts same rate of energy on water and sand, which heats up sand more quickly and water more slowly. Water covers around 70% of the Earth's surface and its high specific heat plays a very important role to sustain life in the earth. It is able to absorb a lot of heat without a significant rise in the temperature. When temperatures decrease, the heat which is stored is released, restraining a rapid drop in temperature. The combined effect is the buffering of heat. A relatively constant temperature without sudden rise and drop is essential to sustain life. Hence water is important for life.Q. Specific heat capacity of ice is ............... than and specific heat capacity of water vapour is ............... than that of water.

Importance of high specific heat capacity of water for life Specific heat capacity of a substance is the amount of heat required to raise the temperature of that substance by 1 K. It is expressed in the units J/ (kg K). A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. Water has the highest known specific heat capacity. Its specific heat capacity is 4.186 K J/ (kg K) i.e. to raise the temperature of 1 kg of water by 1 Kelvin it requires 4.186 KJ of heat. For comparison sake, Copper requires only 385 Joules of heat to raise 1 kilogram of copper by 1 Kelvin. It also interesting to know that the specific heat capacities in two other phases of water (i.e. ice and water vapour) are less than this. High specific heat of water is mainly due to the presence of a large number of hydrogen bonds between molecules of water. On a beach on a sunny day, it is noticed that the sand is often quite hot to walk on, but the water is always cool, even in the shallows. This is because sand has a lower specific heat capacity than that of water. Sand takes less energy to raise the temperature by one degree. Because water has a high specific heat capacity, it requires more energy to raise the temperature by one degree. Since the sun puts same rate of energy on water and sand, which heats up sand more quickly and water more slowly. Water covers around 70% of the Earth's surface and its high specific heat plays a very important role to sustain life in the earth. It is able to absorb a lot of heat without a significant rise in the temperature. When temperatures decrease, the heat which is stored is released, restraining a rapid drop in temperature. The combined effect is the buffering of heat. A relatively constant temperature without sudden rise and drop is essential to sustain life. Hence water is important for life.Q. On a beach on a sunny day, it is noticed that the sand is often quite hot , but the water is always cool. This is due to

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A beaker contains 200g of water. The heat capacity of the beaker is equal to that of 20g water the initial temperature of water in the beaker is 20 degree celsius.if 440g of hot water at 92 degree Celsius is poured in, the final temperature (neglecting radiation loss) will be nearly.?.the answer for this is 68 degree celsius . Please solve this .?
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A beaker contains 200g of water. The heat capacity of the beaker is equal to that of 20g water the initial temperature of water in the beaker is 20 degree celsius.if 440g of hot water at 92 degree Celsius is poured in, the final temperature (neglecting radiation loss) will be nearly.?.the answer for this is 68 degree celsius . Please solve this .? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A beaker contains 200g of water. The heat capacity of the beaker is equal to that of 20g water the initial temperature of water in the beaker is 20 degree celsius.if 440g of hot water at 92 degree Celsius is poured in, the final temperature (neglecting radiation loss) will be nearly.?.the answer for this is 68 degree celsius . Please solve this .? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A beaker contains 200g of water. The heat capacity of the beaker is equal to that of 20g water the initial temperature of water in the beaker is 20 degree celsius.if 440g of hot water at 92 degree Celsius is poured in, the final temperature (neglecting radiation loss) will be nearly.?.the answer for this is 68 degree celsius . Please solve this .?.
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