Question

In a large building, oil is used in a steam boiler heating system. The combustion of...

In a large building, oil is used in a steam boiler heating system. The combustion of 1.0-lb of oil provides 2.4×107J.

How many kilograms of oil are needed to change 190 kg of water to steam at 100 ∘C?

Express your answer to two significant figures and include the appropriate units.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

n a large building, oil is used in a steam boiler heating system. The combustion of 1.0-lb of oil provides 2.4×107J.

How many kilograms of oil are needed to change 190 kg of water to steam at 100 ∘C?

during conversion of water to steam at 100 deg.c, latent heat has to be supplied and this latent heat= mass of water* heat of vaporization = 190Kg* 2260 Kj/kg = 429400 KJ

1 lb=0.4535 kg of oil produces 2.4*107 J or 2.4*107/1000 Kj or 2.4*104 KJ

2.4*104 KJ is produced from 0.4535 kg of oil

429400 Kj is produced from 429400*0.4535/ (2.4*104)= 8.11 kg

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.) calculate the heat change in kilocalories for condensation of 3.5 kg of steam at 100...
A.) calculate the heat change in kilocalories for condensation of 3.5 kg of steam at 100 Celsius.(Express your answer as a positive value using two significant figures and include the appropriate units) B.) calculate the heat change in kilojoules for condensation of 185 g of steam at 100 Celsius. (Express your answer as a positive value using three significant figures and include the appropriate units)
Thermal Storage Solar heating of a house is much more efficient if there is a way...
Thermal Storage Solar heating of a house is much more efficient if there is a way to store the thermal energy collected during the day to warm the house at night. Suppose one solar-heated home utilizes a concrete slab of area 12 m2 and 25 cm thick. Part A Part complete If the density of concrete is 2400 kg/m3, what is the mass of the slab? Express your answer to two significant figures and include appropriate units. 7200 kg SubmitPrevious...
Part A What mass of steam at 100∘C must be added to 1.90 kg of ice...
Part A What mass of steam at 100∘C must be added to 1.90 kg of ice at 0∘C to yield liquid water at 18 ∘C? The heat of fusion for water is 333 kJ/kg , the specific heat is 4186 J/kg⋅C∘ , the heat of vaporization is 2260 kJ/kg . Express your answer to two significant figures and include the appropriate units. m =
What mass of steam at 100∘C must be added to 1.00 kg of ice at 0∘C...
What mass of steam at 100∘C must be added to 1.00 kg of ice at 0∘C to yield liquid water at 18 ∘C? The heat of fusion for water is 333 kJ/kg , the specific heat is 4186 J/kg⋅C∘J/kg⋅C∘ , the heat of vaporization is 2260 kJ//kg . Express your answer to two significant figures and include the appropriate units m=
2.0 kg of water at 37 ∘C is mixed with 2.0 kg of water at 48...
2.0 kg of water at 37 ∘C is mixed with 2.0 kg of water at 48 ∘C in a well-insulated container. Estimate the net change in entropy of the system. Express your answer to two significant figures and include the appropriate units.
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then...
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. An industrial flywheel has a 1.8 m diameter and a mass of 220 kg . Its maximum angular velocity is 1600 rpm . Part A A motor spins up the flywheel with a constant torque of 57 N?m . How long does it take the flywheel to reach top...
Solar heating of a house is much more efficient if there is a way to store...
Solar heating of a house is much more efficient if there is a way to store the thermal energy collected during the day to warm the house at night. Suppose one solar-heated home utilizes a concrete slab of area 14 m2and 26 cm thick. Part A If the density of concrete is 2400 kg/m3, what is the mass of the slab? The slab is exposed to sunlight and absorbs energy at a rate of 1.5 ×107J/h for 10 h. If...
Heat, q, is energy transferred between a system and its surroundings. For a process that involves...
Heat, q, is energy transferred between a system and its surroundings. For a process that involves a temperature change q=m?Cs??T where Cs is specific heat and m is mass. Heat can also be transferred at a constant temperature when there is a change in state. For a process that involves a phase change q=n??H where, n is the number of moles and ?H is the enthalpy of fusion, vaporization, or sublimation. The following table provides the specific heat and enthalpy...
Case Abstract: Company ABC, an AE, constructor and construction management firm, recently assigned Bob Ironside to...
Case Abstract: Company ABC, an AE, constructor and construction management firm, recently assigned Bob Ironside to turn a major coal fired generating station project around. Currently at 36 percent construction completion, the project is shifting from an emphasis on civil and structural work to bulk production. Cooperation of the owner, the multi-prime contractors, and strong labor unions is cach vital for performance improvement. The analysis of this project involves: 1) identification of significant external influences on the project organization, 2)...
When is a hypothesis considered scientific? a. when it is based on something other than observation...
When is a hypothesis considered scientific? a. when it is based on something other than observation b. when it can be tested and is refutable c. when it relies on anecdotal evidence d. when it relies on mystical explanations e. All hypotheses are considered scientific until experiments determine otherwise. 3. Of the following, which is the earliest step in the scientific process? a. generating a hypothesis b. analyzing data c. conducting an experiment d. drawing a conclusion e. developing a...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT