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World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 Btu ), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 x 10^17Kj . The use of the British thermal unit (Btu) is common in much engineering work. (1 Btu = 1054J) A BTU is the amount of heat required to raise the temperature of 1 Lb of water by 1 degree . How many quads of energy does world energy consumption quantity represent?
What is the approximate mass percent of cholesterol in a blood sample having a cholesterol level of 176? Why can you not give a more precise answer
a solution of 4.93 g of a carbohydrate in 100.0 g of water has a density of 1.017 gml and an osmotic pressure of 3.36
suppose a cup of coffee at the campus coffee shop is 1.50 and a cup of hot tea is 1.25 and a students beverage budget
A tank contains a mixture of 3.0 mol N2, 2.0 mol O2, and 1.0 mol CO2 at 25 degrees celsius and a total pressure of 10.0 atm. Calculate the partial pressure (in torr) of each gas in the mixture.C
a cup of hot steaming coffee sits on the desk at 80 degrees celsius and is composed of mostly water with some things
If wave (a) has a wavelength of 1.0 m and a frequency of 3.0*10^8 cycles, what are the wavelength of wave
Suppose a 5-volt battery is delivering a steady current of 5 A for a period of 4 hours. Calculate the total charge in coulombs that passes through this circuit.
How many mL of 0.220 M of NaOH are needed to completely hydrolyze 2.40 grams of propyl acetate.
Calculate the volume the gas will occupy if the pressure is increased to 1.88 atm while the temperature is held constant
Back titration with .02127 M Zn2+ at pH 5 reqired 23.54ml to reach the xylenol orage end pt. a 2.00ml sample of unknown was passed thru an ion-exchange column designed to absorb co2+. the Ni2+ that passes thru ion-exchange column was treated with ..
one type of sunburn occurs on exposure to UV light of wavelength in the vicinity of 325nm.
Use the Henderson-Hasselbalch equation to calculate the pH of a 250 mL solution of 0.3 M acetic acid (pKa = 4.76; assume it is initially fully protonated)
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