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A compound contains the elements Ca and F. Analysis indicates that 2.94 g of sample of the compound contains 0.93 g calcium. Calculate the mass of fluorine in the sample.
We did TLC and column chromatography separating methylene blue and fluorescein. The solvent contained mostly ethanol but also had NaOH, and this NaOH formed SiO- with the silica (the stationary phase), which is in competition with the solvent for ..
determine the mass of lithium hydroxide produced when 0.38 grams of lithium nitride reacts with water according to the following unbalanced chemical equation
Determine the mass of the steel bar If the final temperature of the system reached to 21.0 degree celsius?
At 2000 degrees celcius the equiblibrium constant for the reaction 2NO to N2 and O2 is Kc = 2.4 x 103. If the initial concentration of NO is 0.200M, what are the equilibrium concentrations of NO, N2, and O?x?
Calculate the specific heat capacity of the metal when the final temperature of the mixture =38.7?C.? (Assume that there is no energy lost to the surroundings.)
A rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 C. After a period of time the pressure in the vessel is reduced to 1 bar due to heat transfer with the surroundings.
calculate the molar mass of the solute (acetic acid) and suggest what the structure might be.
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Draw a detailed mechanism for the FeBr3-catalyzed reaction of the ethylbenzene with bromine, and show why the sigma complex (and the transition state leading to it) is lower in energy for substitution at the ortho and para position than it is for ..
It takes 55.0 J to raise the temperature of an 8.80 g piece of unknown metal from 13.0C to 25.0C. What is the specific heat for the metal? Express your answer numerically, in J/g. C
Just based on the orbital occupancy of electrons, is it justifiable to distinguish between the transition and inner transition elements? Should we consider any other factors?
Write the chain propagation steps for the formation of dichloromethane in the chlorination of methane
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