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What is the mass of H2SO4 in 520.0 cm3 sample of sulfuric acid that has a density of 1.55 g/cm3 and which consists of 55.0 % H2SO4
Provide the newman projections across the C 2 -C 3 bonds for the major conformers after Drawing the zig-zag structures of all the isomers of 2,3-diaminopentane.
Calculate the equilibrium concentration of Zn2+(aq) in a solution that is 0.0125 M Zn(NO3)2 and 0.600
A mixture of nitrogen and liquid ethanol in a closed constant-volume container has a partial pressure of 101 mm Hg of nitrogen and 66.2 mmHg ethanol at 27 C (300 K)
During the late 1800's, hard rock miners replaced candles with carbide lamps for work in mine shafts. The lamps worked by dripping water onto calcium carbide that generated acetylene gas (H2C2) that was burned.
The cup is a volume widely used by cooks in the U.S. One cup is equivalent to 237 cm^3. If 1 cup of olive oil has mass of 216 g, what is the density of olive oil in g/cm^3?
Discuss the differences observed in the IR and NMR spectra of 3-nitrophthal-hydrazide and luminol that are consistent with reduction of the nitro function to an amino group in this experiment.
If 0.600 gram of zinc is used, what is the amount of zinc chloride that is produced in the above reaction?
What advantages and disadvantages exist for both organic and inorganic solar cells? Describe the main barriers or technical difficulties associated with each.
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
A sealed balloon is filled with 1.00 L of helium at 23 degrees celsius and 1.00 atm. The baloon rises to a point in the atmosphere where the pressure is 220 torr and the temperature is -31 degrees celsius.
Write the element symbol and charge. How many unpaired electrons are there in the ground state of this ion
The second-order reaction 2 Mn(CO)5 Mn2(CO)10, has a rate constant equal to 3.0 x 10^9 M-1 s-1 at 25C. If the initial concentration of Mn(CO)5 is 2.0 x 10-5 M, how long will it take for 90.% of the reactant to disappear?
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