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Problem- To produce the same energy, it takes 1.6 times more coal (by volume) than oil. How many gallons od oil will give you the same amount of energy as 650 pounds of coal. Assume that 1 pound of coal has a volume of 0.14 gallons
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Find the pH during the titration of 20.00mL of .1000M butanoic acid, with .1000M NaOH solution after the following additioins of titrant: a. 0 mL b.10.00 mL
Question- Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness, a sample of groundwater is titrated with EDTA, a chelating agent..
225mL of a gas are collected over water at 22 C and 790torr. Explain the mass of the gas is 0.425 g as well as the vapor pressure of water at 22 C is 20torr. Explain what is the molar mass of the gas
an unknown molecule contains only iodine and fluorine and it is 57.2 i by mass. what is the electron domain geometry of
Calculate the PH fat equivalence point in titrating 0.100 M solutions of each of the following with 0.080M NaOH;( a) chlorous acid (hclo2), (b)benzoic acid(c6h5cooh) will give more points for all the steps.
Estimate the temperature at which calcium carbonate is likely to decomp under 1atm of pressure. Reaction: CaCO3(s) -> CaO(s) + CO2 (g) For this rxn: dHstandard = 177.8 kJ and dS standard= 160.5 J/K (notice unit differences)
A 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 ?C to 70 ?C .What is the speci?c heat capacity of this liquid.
The synthesis of enzymes in response to changing metabolic needs is referred to as
Determine the numbers of oxygen molecules are required for each molecule of C 6 H 12 O 6 glucose that is oxidized if Glucose is oxidized by molecular O 2 to CO 2 and H 2 O?
potassium fluoride is very soluble in glacial acetic acid and the solutions have a number of unusual properties. in an
The following reaction equation depicts the reaction between hydrazine (N2H4) and dinitrogen textroxide (N2O4) to form diatomic nitrogen and water vapor.
If the charge on the metal remained the same and nitrogen was substituted for oxygen, what would the formula and systemic name for the compound be
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