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Indicate the ionic species that predominates at pH 4, 8, and 11 for (a) ammonia and (b) phosphoric acid.
Compound B has molecular formula C6H10O and does not possess any bonds. When treated with concentrated HBr, cis-1,4-dibromocyclohexane is produced. Identify the structure of compound B.
methanol, CH3OH can be produced through the reaction of CO and H2. if 75.o grams of CO is used and the typical yield is 79.8%, what mass of methanol is likely to be produced.
The system then re-equilibrates. The appropriate chemical equation is PCl3+Cl2PCl5. Calculate the new partial pressures after equilibrium is re-established
When 24.0 g of glucose (a nonelectrolyte) are dissolved in 500. g of water, the solution has a freezing point of -0.47°C. What is the molar mass of glucose? Kf of water is 1.86°C/m.
What is the voltage output of the half -cell at the pt electrode that you made out of a saturated solution of ca(IO3)2 (s) if the E0 for IO3-/I- is 0.26v in a solution
Find the number of moles of the indicated species in (a) 6.84 g of B2O3 (b) 296 mg of Na2B4O7 10 H20 (c) 8.75 g of Mn3O4 (d) 67.4 mg of CaC2O4
chromatogram for the presence of compounds other than isopentyl acetate. Explain the presence of any additional compounds
An apparatus to be used in a decomposition study was filled with N2 gas at 400.00 mm Hg and 400.0 deg C. The volume of the apparatus was 400.0 mL.
To determine the number of molecules present in air using the ideal gas law and Avogadro's number - how many molecules of each type of gas are present in 1.0 L of air at STP?
When power was turned off to a 30.0 gal. water heater, the temperature of the water dropped from 75.0°C to 22.5°C. How much heat was lost to the surroundings? (1 gal = 3.785 L) Assume the density of water is 1.00 g/mL.
A protein has been eluted from a DEAE-cellulose column by washing with a salt-containing solution. Before the protein is subjected to a quantification assay,
Calculate concentration of NaClO solution from that equation and calculate How many grams of this nuclide in a sample of 4.00 g will remain after 112 years?
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