Question

how much heat is needed to heat 100g of water initially at room temperature (20 degrees...

how much heat is needed to heat 100g of water initially at room temperature (20 degrees C) to a final temperature of 70 degrees C. The specific heat of water is 1.p cal/g×degrees C.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Heat needed is Q=ms at = (1009) * 1.0 calooc (70*C - 200c) 1Q 2 5000 cal

Add a comment
Know the answer?
Add Answer to:
how much heat is needed to heat 100g of water initially at room temperature (20 degrees...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • a 73.6g sample of aluminum is heated to 95.0 degrees and dropped into 100g of water...

    a 73.6g sample of aluminum is heated to 95.0 degrees and dropped into 100g of water at 20 degrees 49. A 73.6 g sample of aluminum is heated to 95.0oC and dropped into 100.0 g of Vater at 20.0%C. If the resulting temperature of the water is 30.0C, what is the specific heat of the metal? 100 10 = 1073 a. 0.143 cal/g A C b. 0.209 calg Á ØC c. 0.418 cal/g Á ØC d. 0.486 cal/g A @C...

  • 3. Calculate the heat absorbed by 25.0 g of water needed to raise its temperature from...

    3. Calculate the heat absorbed by 25.0 g of water needed to raise its temperature from 20.0°C to 65.0°C. The specific heat of water is 4.18 J/gºC. Show your work Final Answer 4. Aluminum metal has a specific heat of 0.901 J/g C. How much heat is transferred to a 6.75 g piece of aluminum initially at room temperature, 20.0°C, when it is placed into boiling water? The temperature of boiling water is 100°C. Show your work Final Answer 5....

  • 15. How much heat is needed to melt a 4 kg block of cheddar cheese initially...

    15. How much heat is needed to melt a 4 kg block of cheddar cheese initially at room temperature of 25 degrees C? (assume the melting point of cheddar cheese is 150 degrees C, the latent heat of fusion of cheese is 124 KJ/kg and the specific heat of cheddar cheese is 2.08 KJ/kg C) (in J)

  • 3. Calculate the heat absorbed by 25.0 g of water needed to raise its temperature from 20.0°C to 65.0'C. The specif...

    3. Calculate the heat absorbed by 25.0 g of water needed to raise its temperature from 20.0°C to 65.0'C. The specific heat of water is 4.18 J/gºC. Show your work Final Answer 4. Aluminum metal has a specific heat of 0.901 J/g C. How much heat is transferred to a 6.75 g piece of aluminum initially at room temperature, 20.0°C, when it is placed into boiling water? The temperature of boiling water is 100°C. Show your work Final Answer 5....

  • How much heat in calories is needed to change 30 g of ice at -7 degrees...

    How much heat in calories is needed to change 30 g of ice at -7 degrees celsius to water at 40 degrees celsius? A. 3000 cal B. 1214 cal. C. 3705 cal

  • A 100g mass of tungsten at 100 degrees C is placed in 200 mL of water at 20 degrees C

    7. A 100g mass of tungsten at 100 degrees C is placed in 200 mL of water at 20 degrees C. The mixture reaches equilibrium at 21.6 degrees C. Calculate the specific heat of tungsten. Ok, I tried working it out but I got q= 100g x 4.186 j/g*degrees C * (21.6 degrees C- 20.0 degrees C) which equals to 1.6. So q= 100g * 4.186 j/g*deg C * 1.6 I got a very high number. I am stuck what...

  • 1. How much heat is needed to raise the temperature of 3 kg of water from...

    1. How much heat is needed to raise the temperature of 3 kg of water from 20oC to 40oC? Give answer in kJ (1kJ = 1000 J) (round answer to 3 sig fig) 2. How much heat is needed to raise the temperature of 3 kg of ice from -40oC to -20oC? (round answer to 3 sig fig) Specific heat of water: C = 4180 J/kgK Specific heat of ice: C = 2090 J/kgK Specific heat of ethanol: C= 2440...

  • How much heat is required to change 50 g of ice at 0 oC into liquid...

    How much heat is required to change 50 g of ice at 0 oC into liquid water at 0 oC? Qmelt ice = cal   2) If 300 g of water initially at 25 oC released the amount of heat that you found in Part (1), what would its temperature be afterward? Tafter = oC   3)If you were to combine 50 g of liquid water at 0 oC with 300 g of the water at the temperature you found in Part...

  • We want to determine how much the room temperature increases when a kg of ice freezes.

     We want to determine how much the room temperature increases when a kg of ice freezes.Suppose you have a freezer that needs 1 J of energy for every 3 J of heat it removes.How much thermal energy must be removed from 1 kg of water at room temperature? How much electrical energy is used to freeze the ice?What is the total energy, including waste heat, that is dumped into the kitchen? If the kitchen contains 40 kg of air, how...

  • How much heat energy in joules must be added to 78 grams of water initially at...

    How much heat energy in joules must be added to 78 grams of water initially at 23 degrees Celsius if it ends up at 53 degrees Celsius. Remember that the specific heat capacity of water = 4186 J/ (kg oC) or 1 calorie / (g oC)

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
Active Questions
ADVERTISEMENT