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Which would most likely increase the solubility of a solid in water ? stirring, increase the surface area of solid, increase pressure or increase temperature
An unknown sample with a molecular mass of 180.og is analyzed to yeild 40% c, 6.7% H, and 53.3% o. What is the empirical formula and the molecular formula of this compound?
How many equivalents of electrons were delivered to the unknown soln. What is the normality of the unknown solution
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is 100K * k (E represents epsilon and k is Boltzmann's constant). Assume that there are 10 particles.
The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, B, C, and D. 1H NMR of D: d 8.1-7.5, multiplet, 5H; 2.85, quartet, 2H; 1.30, triplet, 3H.
A general chemistry student found a chunk of metal in the basement of a friend's house. To figure out what it was, he used the ideas just developed in class about density.
considering the heisenbergs uncertainty principle compute the uncertainty in the position of a 1.50-mg mosquito moving
The pH of the resulting solution is 2.65. Calculate the Ka for the acid.
A 200.0-mL sample of the same tap water required 47.86 mL of the standard EDTA for titration at pH 10 using calmagite indicator. Calculate the molar concentration of Mg2+ in the tap water
A gas expands and does P-V work on the surroundings equal to 325 J. At the same time, it absorbs 127 J of heat from the surroundings. Calculate the change in energy of the gas.
To find the mass of water use the density of water = 1.0 g/mL. I have looked at multipule different solutions that have already been worked but have not been able to get the correct answer no matter how many different ways i got about getting it.
A solution is prepared by dissolving 179 g sucrose (C12H22O11) in enough water to produce 1.15 L solution. What is the molarity of this solution?
Calculate the average translational kinetic energy (sometimes just called average kinetic energy) for one mole of gas at 385 K.
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