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A student drops an object weighting 15.8 g into an open vessel of ethanol, thus that a volume of ethanol spills out equal to the volume of the object. The experimenter at this time finds that the vessel and it contents weigh 10.5 g more than the vessel full of ethanol only. The density of the ethanol is .789g/cm^3. Explain what is the density of the object?
The limiting reactant in the salt mixture was later determined to be CaCl2x2H2O a) How many moles and grams of the excess reactant, K2C2O4xH2O, reacted in the mixture? b) How many grams of the K2C2O4XH2O in the salt mixture remain unreacted (in ex..
(0.0250 moles)(5 moles of the H20 / 1 mole of copper sulfate pentahydrate)(18.01 g/mol of H2O) = 2.25 grams, on top, in order to achieve the real molarity of CuSO4 when in solution?
Explain what is the height of a column of liquid in a barometer if the density of the liquid is 1.076 g/mL as well as the local atmospheric pressure is 0.87 bar
Take 7 test tubes from the Glassware shelf and place them on the workbench. Add 1g of the seven metals on the chemicals shelf (Ag, Ca, Cu, Fe, Mg, Pb, Zn) into the seven test tubes, one metal per test tube.
A key oxidative step(s) in the B-oxidation cycle of fatty acids includes: a. addition of water to a double bond b. generation of a double bond from two adjacent -CH2 carbons
Which of the following chemical shifts would correspond to an aldehyde proton signal in a 1H NMR spectrum
Lakes that have been acidified by acid rain can be neutralized by the addition of limestone (CaCO3). How much limestone in kilograms would be required to completely neutralize a 5.2 x 109 L lake containing 5.0 x 10-3 g of H2SO4 per liter
aqueous solution in the upper intestinal tract where the pH is 5.83. Calculate the percent of sulfisomidine in the neutral form in the solution of the intestinal tract.
Suppose Sulfur trioxide dissolves in water, producing H2SO4. Explain how much sulfuric acid can be produced from 13.9ml of water (d=1.00g/ml) and 25.7g of SO3
Can someone please explain the chemistry of lidocaine synthesis to me. We made lidocaine in the lab and used 2,6 dimethylaniline, glacial acetic acid, chloracetyl chloride, sodium acetate, toluene, diethtylamine, hexane, HCL, potassium hydroxide a..
Dihydroxybenzene and o-dihydroxybenzene can be separated by TLC using silica gel and a solvent of medium polarity. The ortho isomer has a significantly higher Rf value than the para isomer. Suggest a reason for this difference in Rf values.
What type of radioactive decay would be expected for the unstable nuclide
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