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Pressures up to 3000 (atm) are measured with a dead-weight gauge. The piston diameter is 0.17 (in). What is the approximate mass in (lbm) of the weights required?
An element X forms the oxalate complex X2C2O4 which is 7.91% C and 21.07 % O by mass. What is the identity of the Element X
The mass of the crucible plus CaO was 26.7134 g). What is the concentration of Ca (40.078 g/mol) in the river water in units of part per thousand (ppt) (by mass), assuming the river water has the same density as pure water
Combustion analysis of an unknown compound containing only carbon and hydrogen produced 4.554 g of CO2 and 2.322 g of H2O. What is the empirical formula of the compound? this would be so much easier if they gave the grams of the unknown compound.
what is the pH of a buffered system made by dissolving 17.42 g of KH2PO4 and 20.41 g of K2HPO4 in water to give a volume of 200.0 mL?
How much heat energy is needed to raise the temperature of a 0.50 L of ethanol (d = 0.79 g/mL) from 20.0°C to 50.0°C. Specific heat capacity of ethyl alcohol = 2.45 J/g°C
During this process, 346 J of work was done by the system and its internal energy 9185 J. What is the specific heat of the gas?
Some enzymes require a nonprotein prosthetic group in order to function. The nonprotein part of these enzymes are called
The energy of a photon is 9.61 x 10 ^ -20 J . What is its wavelenght( in nanometers)? Enter your answer in scientific notation
Identify the original liquid and write a structure for the solid derivative. After identifying the unknown liquid, can you indicate what the structure of the precipitate obtained on reaction with bromine might be?
Thomas Jefferson Snodgrass (Jeff1 found an unlabelled reagent bottle in his -80 oC freezer. The bottle contained a liquid. He found that the compound (compound I) quickiy evaporated when warmed to room temperature. 'H-NMR of the compound showed. o..
how much heat in kj would be required to vaporize 1.00 l of diethyl ether c4h10o density is 0.714gml at 298 k if the
Write the reaction for the hydrolysis of propionyl propionate (an ester) -- that is, the reaction of this ester with water, yielding a carboxylic acid and an alcohol.
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