# Science

posted by .

1). Assume the following:

-the house has 2,000 square feet

-80,000 BTU's of heat per sq. foot are required to heat the house for winter.

-Natural gas is available at a cost of \$5.00 per thousand cubic feet.

-One cubic foot of natural gas supplies 1,000 BTUs of heat energy

-The furnace in the house is 80% energy efficient.

a). Calculate the number of cubic feet of natural gas required to heat the home for one winter.

This is my work: 2,000 x 80,000= 160,000,000 BTUs needed total. But it's only 80% energy efficient so... 160,000,000/.8=200,000 cubic feet. Is this correct?

Then it gets more complicated...

I have to find the cost of heating the house for one winter. So I divided 200,000 cubic feet by 1,000 and got 200. I multiplied that by \$5 and got \$1,000...is this correct?

• Science -

I just completed this question the other day with two of my peers. We got the same answers as you. We also checked the answers on the AP Guidelines and they were correct. So you were right!

• Science -

I have just

## Similar Questions

1. ### geometry

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
2. ### math

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
3. ### geometry

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
4. ### thermodynamic

A heat pump is proposed that uses 50 degree F ground water to heat a house to 70 Degree F. The groundwater experiences a temperature drop of 12 degree F. If the house require 75,000 Btu/hr, Calculate the minimum mass flux of the groundwater …
5. ### Chemistry

How much heat (in BTU) would be required to heat and vaporize 100 lb of water from 25°C to saturated steam at 1 atm?
6. ### material science

How much heat (in BTU) would be required to heat and vaporize 100 lb of water from 25°C to saturated steam at 1 atm?
7. ### math

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
8. ### geometry

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
9. ### MATH

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be \$281,250. The second plan is for a house that will …
10. ### Chemistry

Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house. Assuming that all the energy given off in the reaction goes …

More Similar Questions