Explain what fraction of the us coal reserves

Assignment Help Chemistry

Reference no: EM13328199

Solar energy has been suggested as a source of renewable energy. If, in the desert direct radiation from the sun (save for 320 days) is 975 W per m2 between 10 AM and 3 PM, and the conversion efficiency to electricity is 21%, how many square meters are needed to collect an amount of energy equal to annual US energy consumption of 100 quadrillion BTUs? Is this construction feasible? How many pounds of coal (of heating value of 10,000 BTUs per pound) would be needed to provide the 100 quadrillion BTUs if the efficiency of conversion to electricity was 35%? What fraction of the US coal reserves (estimated at 250 billion short tons) is the calculated quantity?

Reference no: EM13328199

Questions Cloud

Explain how many grams of cah2 : How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 14.0 L of H2 gas if the pressure of H2 is 757 torr at 20.0°C

What is the maximum horizontal acceleration cart can have : A 1.00 kg block is sitting on the top og a 10.0kg cart that is free to move on a horizontal surface. What is the maximum horizontal acceleration the cart can have

How much volume of dry air needs to be used for operation : You are designing a drier that must evaporate 200 lb/h of H2O from sludge by using air. Air at 70°F and 50% relative humidity is drawn into the drier and it leaves at 140F and 70% relative humidity. How much volume of dry air needs to be used for ..

How much work does the engine do : A 1053-kg car starts from rest at the bottom of a drive way and has a speed of 3.00 m/s at a point where the drive way has risen a vertical height of 0.600 m. How much work does the engine do

Explain what fraction of the us coal reserves : How many pounds of coal (of heating value of 10,000 BTUs per pound) would be needed to provide the 100 quadrillion BTUs if the efficiency of conversion to electricity was 35%? What fraction of the US coal reserves (estimated at 250 billion short t..

How far forward does a point on the tire travel : A sports utility vehicle has tires which are 110 cm in diameter. If the wheel is rotated through 30 revolutions, how far forward does a point on the tire travel

How much additional debt will be needed to issue : Your firm has an ROE of 12.1%, a payout of 29%, $576,100 of stockholders equity, and $438,700 of debt. If yougrow at your sustainable growth rate this year, how much additional debt will you need to issue

Explain the empirical formula of the hydrated compound : A hydrated iron chloride compound was found to contain 20.66% Fe, 39.35% Cl, and 39.99% water. Determine the empirical formula of this hydrated compound.

Determine how long the sheaf is airborne : One of the events in the Scottish Highland Games is the sheaf toss, in which a 7.92-kg bag of hay is tossed straight up into the air using a pitchfork. Using the total impulse produced by gravity, determine how long the sheaf is airborne

User Account

All Pages