Assuming that radiation with a wavelength = 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 degree celcius, how many photons are necessary to raise the temperature o
Homework Answers
(h c/L)*N = 1.025*10^5 J
Solve for N.
L is the wavelength in meters
c = 3*10^8 m/s
h = Planck's constant
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Assuming that radiation with a wavelength = 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 degree celcius, how many photons are necessary to raise the temperature o
Assuming that radiation with λ=15.0 cm is used, that all the energy is converted to heat,...
Assuming that radiation with λ=15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 ∘C, how many photons are necessary to raise the temperature of a 250 mL cup of water from 20 ∘C to 95 ∘C? Express your answer using
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required...
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 205 mL of coffee from 25.0 °C to 62.0°C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/( 8K), as water over this temperature range. Express the number of photons numerically. View Available Hint(s) o A¢ ROO? photons Suppose that 23 g of each of the following substances is initially at 29.0°C. What is the...
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by the water molecules...
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by the water molecules in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Suppose that the microwave radiation has a wavelength of 12.4 cm . How many photons are required to heat 235 mL of coffee from 25.0 ∘C to 62.0 ∘C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity,...
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by the water molecules...
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by the water molecules in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Part A Suppose that the microwave radiation has a wavelength of 12.4 cm. How many photons are required to heat 285 mL of coffee from 25.0°C to 62.0 °C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity...
Die gnt of 425 nm. 2. A typical microwave oven uses radiation of wavelength 12.2 cm...
Die gnt of 425 nm. 2. A typical microwave oven uses radiation of wavelength 12.2 cm a. How many moles of photons of this radiation are required to raise the temperature of 500.0 mL of water from 25°C to its boiling point? b. A watt (W) is a unit of power the rate at which energy is delivered or consumed (Power (W) = Energy (J)/time (s) or 1 W= 1 J/s. If all the energy of a 700-W microwave oven...
4. Determine how many calories of heat are needed to raise the temperature of 250. mL...
4. Determine how many calories of heat are needed to raise the temperature of 250. mL of water from 25°C to 45°C. Specific heat (C) of H2O is 1.00 calorie/g°C. q=C x mass x At. 4 SC -29 250
water has a specific heat of 4.184J/g degree C. How many kJ of energy are required...
water has a specific heat of 4.184J/g degree C. How many kJ of energy are required to raise the temperature of0. 453kg of water from 21.0 degree C to 37.0 degree C?
Part A If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 55...
Part A If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 55 g of methanol from 1 °C to 92 °C?
please please answer all question 17. How many JOULES of energy are needed to warm 4.37...
please please answer all question
17. How many JOULES of energy are needed to warm 4.37 g of silver (Ag) from 25.0 c to 27.5 C? The specific heat of silver is 0.24c a. 0.14J b. 2.6 c. 46 J d. 0.022 18. Given the table below of specific heat capacities, which one will experience the SMALLEST increase in temperature if 10.0 J of heat is added to 1.00 g of each of these substances? Water Cast iron Lead (Pb)...
How many grams of water can be heated from 25.0oC to 36.7oC by the heat released...
How many grams of water can be heated from 25.0oC to 36.7oC by the heat released from 78.0 g of copper that cools from 88.5oC to 32.8oC? How many grams of copper can be cooled from 79.7 to 26.0 °C by the heat gained by 100.0 g of water that has an increase in temperature from 21.0 to 39.8 °C? A vat of 5.25 kg of water underwent a decrease in temperature from 60.33 to 58.21 °C. How much energy...
Suppose that the microwave radiation has a wavelength of 10.8 cm. How many photons are required to heat 205 mL of coffee from 25.0 °C to 62.0°C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/( 8K), as water over this temperature range. Express the number of photons numerically. View Available Hint(s) o A¢ ROO? photons Suppose that 23 g of each of the following substances is initially at 29.0°C. What is the...
Microwave ovens use microwave radiation to heat food. The microwaves are absorbed by the water molecules in the food, which is transferred to other components of the food. As the water becomes hotter, so does the food. Part A Suppose that the microwave radiation has a wavelength of 12.4 cm. How many photons are required to heat 285 mL of coffee from 25.0°C to 62.0 °C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity...
Die gnt of 425 nm. 2. A typical microwave oven uses radiation of wavelength 12.2 cm a. How many moles of photons of this radiation are required to raise the temperature of 500.0 mL of water from 25°C to its boiling point? b. A watt (W) is a unit of power the rate at which energy is delivered or consumed (Power (W) = Energy (J)/time (s) or 1 W= 1 J/s. If all the energy of a 700-W microwave oven...
4. Determine how many calories of heat are needed to raise the temperature of 250. mL of water from 25°C to 45°C. Specific heat (C) of H2O is 1.00 calorie/g°C. q=C x mass x At. 4 SC -29 250
Part A If the specific heat of methanol is 2.51 J/K-g, how many joules are necessary to raise the temperature of 55 g of methanol from 1 °C to 92 °C?
please please answer all question
17. How many JOULES of energy are needed to warm 4.37 g of silver (Ag) from 25.0 c to 27.5 C? The specific heat of silver is 0.24c a. 0.14J b. 2.6 c. 46 J d. 0.022 18. Given the table below of specific heat capacities, which one will experience the SMALLEST increase in temperature if 10.0 J of heat is added to 1.00 g of each of these substances? Water Cast iron Lead (Pb)...
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