Question

What minimum heat is needed to bring 200 g of water at 40 ∘C to the...

What minimum heat is needed to bring 200 g of water at 40 ∘C to the boiling point and completely boil it away? The specific heat of water is 4190 J/(kg⋅K) and its heat of vaporization is 22.6×105 J/kg.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Specific heat of water = 4190 Joules/kg-C

Heat of vaporization of water = 22.6 x 10^5 Joules/kg.

<< What minimum heat is needed to bring 200 g of water at 40 C to the boiling point >>

Q1 = heat required to bring water to a boil

Q1 = (200/1000)(4190)(100 - 40)

Q1 =50280 joules

Q2 = heat required for water to become steam

Q2 = (200/1000)(22.6 x 10^5) = 452,000 joules

Therefore, the total heat required to satisfy the conditions of the problem is

Q = Q1 + Q2

Q = 502280 joules

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
(a) How much energy does it take to heat 250 g of water from 20 ◦C...
(a) How much energy does it take to heat 250 g of water from 20 ◦C to the boiling point of 100 ◦C? (The specific heat of water is 4190 J/kg · K) (b) (Suppose you wanted to cause the temperature change in part (a) by using an 800W microwave. If we assume all the power delivered by the microwave goes into the water, how long will it take for the water to change temperature? (c) The heat of vaporization...
Calculate the energy needed to heat 14.6 g ice at -10.0 °C to liquid water at...
Calculate the energy needed to heat 14.6 g ice at -10.0 °C to liquid water at 70.0 °C. The heat of vaporization of water = 2257 J/g, the heat of fusion of water = 334 J/g, the specific heat capacity of water = 4.18 J/g·°C, and the specific heat capacity of ice = 2.06 J/g·°C.
(a) Determine the amount of heat flow to bring 0.25kg of water initially at 50°C to...
(a) Determine the amount of heat flow to bring 0.25kg of water initially at 50°C to -10°C. (b) Determine the amount of heat required to bring 0.25kg of water initially at 50°C to 110°C. The specific heat capacity of water is 4186, J/kgC . The latent heat of fusion for water is 333 kJ/kg. and the latent heat of vaporization for water is 2260 kJ/kg.
Calculate the amount of heat ( in kJ) required to convert 344.0 g of liquid water...
Calculate the amount of heat ( in kJ) required to convert 344.0 g of liquid water at 22.5 oC into steam at 145.0 °C. ( Heat of vaporization of water at its boiling point = 40.7 kJ/mol., specific heats of water and steam are 4.184 J/g °C and 2.01 J/g °C, respectively. )
Water has a specific heat of 4.2 k J k g ∘ C . A stockpot...
Water has a specific heat of 4.2 k J k g ∘ C . A stockpot filled with 3.5 kg of water is placed on an electric stovetop with a power output of 1.5 kW, which raises the water’s temperature from 20°C to its boiling point (100°C). To the nearest minute, how long after placing it on the stovetop does it take for the pot of water to start boiling?
What amount of thermal energy (in kJ) is required to convert 220 g of ice at...
What amount of thermal energy (in kJ) is required to convert 220 g of ice at -18 °C completely to water vapour at 248 °C? The melting point of water is 0 °C and its normal boiling point is 100 °C. The heat of fusion of water is 6.02 kJ mol-1 The heat of vaporization of water at its normal boiling point is 40.7 kJ mol-1 The specific heat capacity of ice is 2.09 J g-1 °C-1 The specific heat...
What amount of thermal energy (in kJ) is required to convert 216 g of ice at...
What amount of thermal energy (in kJ) is required to convert 216 g of ice at -30 °C completely to water vapour at 198 °C? The melting point of water is 0 °C and its normal boiling point is 100 °C. The heat of fusion of water is 6.02 kJ mol-1 The heat of vaporization of water at its normal boiling point is 40.7 kJ mol-1 The specific heat capacity of ice is 2.09 J g-1 °C-1 The specific heat...
An iron boiler of mass 180 kg contains 770 kg of water at 21 ∘C. A...
An iron boiler of mass 180 kg contains 770 kg of water at 21 ∘C. A heater supplies energy at the rate of 58,000 kJ/h. The specific heat of iron is 450 J/kg⋅C∘, the specific heat of water is 4186 J/kg⋅C∘, the heat of vaporization of water is 2260 kJ/kg⋅C∘. Assume that before the water reaches the boiling point, all the heat energy goes into raising the temperature of the iron or the steam, and none goes to the vaporization...
An iron boiler of mass 180 kg contains 850 kg of water at 23 ∘C. A...
An iron boiler of mass 180 kg contains 850 kg of water at 23 ∘C. A heater supplies energy at the rate of 58,000 kJ/h. The specific heat of iron is 450 J/kg⋅C∘, the specific heat of water is 4186 J/kg⋅C∘, the heat of vaporization of water is 2260 kJ/kg⋅C∘. Assume that before the water reaches the boiling point, all the heat energy goes into raising the temperature of the iron or the steam, and none goes to the vaporization...
An iron boiler of mass 180 kg contains 770 kg of water at 21 ∘C. A...
An iron boiler of mass 180 kg contains 770 kg of water at 21 ∘C. A heater supplies energy at the rate of 58,000 kJ/h. The specific heat of iron is 450 J/kg⋅C∘, the specific heat of water is 4186 J/kg⋅C∘, the heat of vaporization of water is 2260 kJ/kg⋅C∘. Assume that before the water reaches the boiling point, all the heat energy goes into raising the temperature of the iron or the steam, and none goes to the vaporization...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT