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Why might a poor yield of cyclohexene be realized if the dehydration that you did was carried out with HCl instead ofH3PO4 as the acid catalyst?
Determine the final concentration if a 144-mL portion of that solution is diluted using water of 143 mL ?
The vapor pressure of water at 25deg C is 23.8 torr. Determine the mass of glucose (MolarMass=180g/mol) needed to add 500g of water to change the vapor pressure to 23.3 torr.
Tooth enamel is mainly hydroxapatite,Ca10(PO4)6(OH)2. If 1.117g of tooth enamel reacts with acid to give 1.111g of calicul chloride, what is the percentage of hydroxyapatite in the tooth enamel sample
An electron in the n=1 Bohr orbit has the kinetic energy K1. In terms of K1, what is the kinetic energy of an electron in the n=2 Bohr orbit
the total pressure in the container is 3.60 atm. Calculate the partial pressure of each gas in the container.
Calculate the mass of urea that should be dissolved in 225 g of water at 35°C to produce a solution with a vapor pressure of 37.1 mmHg.
Calculate the difference in the ionization energies for 1H and 4He atoms. This result allows you to compare the effect on the ionization energy of changing the nuclear charge
What is the coordination number of each sphere in a three-dimensional, close-packed array of equal-sized spheres
Determine whether each of the given amounts of solid will completely dissolve in the given amount of water at the indicated temperature.
Concrete used in road construction is reinforced using steel bars in a grid, known collectively as "rebar." After many years, rebar will begin to corrode, and the concrete will weaken.
How many grams of carbon dioxide (CO2) can form when a mixture of 4.95 g of ethylene (C2H4) and 3.25 g of oxygen is ignited. Assume complete combustion to CO2 and H2O.
Iron crystallizes in a body-centered cubic structure. The volume of one Fe atom is approximately 8.37 10-24 cm3, and the density of Fe is 7.874 g/cm3. Calculate an approximate value for Avogadro's number.
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