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At a constant pressure of 1.5 atm, what is the enthalpy change for a reaction where the internal energy change is 58.0 kJ and the volume increase is 12.6 L? (1L * atm = 101.325 J)
A two-component mixture of volatile liquids was separated by gas chromatography using a 15 meter capillary column. The separation was insufficient with this column to see resolution of both fractions.
How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 16.0 L of H2 gas if the pressure of H2 is 729 torr at 21.0°C?
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
A catalyst has a avoid fraction of 0.40, an internal surface area of 180 m2/g and a pellet density of 1.40 g/cm3. Estimate the effective diffusivity of thiophene with hydrogen
How many moles of oxygen are consumed in burning 1.60 moles of benzene, C6H6?
A 10 liter sample of oxygen 0.0°C and 15 cm. pressure is subjected to 150 cm. pressure at the same temperature. What is the new volume of the oxygen?
assign absolube stereochemistry (R or S) to each of the stereocenters in (+)menthol
A compound has a molar absorptivity of 3.71*10^3 L cm^-1 mol^-1. What concentration of the compound would be required to produce a transmittance
Calculate the density of Slackium Oxide. (g/cm^3) What is the Volume of unit cell (cm^3)
Explain which of the following substance has the lowest melting point
Determine the rate constant for the reaction at the temperature of 75 degree celsius?
The temperature of the water and that of the gas are identical at 26oC. how many moles of helium have been evolved.
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