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Phosphorus is obtained primarily from ores containing calcium phosphate.If a particular ore contains 58.5% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosphorus?
calculate the concentration (molarity) of AgCl in a saturated solution.
The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. At 139 degrees C and 1.00 atm, the density of this compound is 2.55g/L. What is the molar mass?
Compute the free energy change needed for transport of sufficient protons to make gastric juice of 1 litter at the temperature of 37 degree celsius hence expect above reaction will happen spontaneously?
Acteylene gas (C2H2) can be produced by the reaction of calcium carbide and water CaC2 (s) + 2H2O----> C2H2 (g) + Ca(OH)2 (aq) How many liters of C2H2 at 742 mmHg and 26 degrees C can be produced from 2.54 g CaC2 (s)
If a buffer is prepared using equal amounts of acetic acid and sodium acetate predict what the pH of the solution will be.
a student measures the conductivity of a kno3 solution and determines it to be a strong electrolyte. the student
A 5g packet of an effervescing stomach antiacid contains 2.68 g of calcium hydroxide to neutralize stomach acid. What volume of stomach acid (containing 0.010mol/L HCl) could be neutralized
A heater burns normal Butane (n-C4H10) using 40% excess air. combustion is complete . the flue gas leaves the stock at a pressure of 100 kpa and a temperature of 260 c
A compound containing only C, H, and O, was extracted from the bark of a sassafras tree. The combustion of 91.3 mg produced 248 mg of CO2 and 50.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formu..
Three solutions are mixed to form a single solution. One contains 0.2 mol Pb(C2H3O2)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2.
Explain as thoroughly as possible, When copper and silver nitrate oxidize/reduce, how does copper lose 2 electrons
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