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The majority of industrial method for the preparation of elemental phosphorus is heating a mixture of phosphate rock, carbon, and sand in electric furnace. The chemical reactions can be represented by 2Ca3(PO4)2 + 6SiO2 ? 6CaSiO3 + P4O10 and P4O10 + 10C ? P4 + 10CO Then calculate the percentage of Ca3(PO4)2 initially present in the rock sample if 307kg of phosphate rock yields 42.5kg of elemental P4.
Calculate the enthalpy and entropy change of C2H6 from a state at 300K and 30 bar to a state at 400 K
Rank the following carbonyl-containing compounds in order of reactivity towards nucleophilic attack.From most reactive to least reactive
A gas occupying 28 mL at standard conditions is heated to 13?C while the pressure is reduced to 0.84119 atm. What is the new volume occupied by the gas.
A light of 655 nm is shone onto a metal surface and transfers some of its momentum to the metal. Will the reflecting light have a wavelength greater or less than 655
The eamount of cadmium in a sample was determined using absorption spectroscopy as an analytical tecnique. Signals from a set of standards were measured and the resulting calibration curve was fit by a straight line with equation
the net atp yield for the complete oxidation of a single glucose molecule is 30 atp. phosphorolysis saves energy and
What is the osmotic pressure associated with a 0.0200 M aqueous solution of a nonvolatile nonelectrolyte solute at 75C
An unknown amount of magnesium metal reacts with 100.0 mL 0f 0.100M aqueous hydrochloric acid. The final solution is acidic, and titrated to an endpoint using 0.150 M aqueous sodium hydroxide. The endpoint was neutralized after the addition of 16...
The type of nuclear reaction shown below is which can be recognized by the fact that it has 2 reactant and 2 products
Identifying An Unknown Liquid And Precipitate. A high-boiling bp = 202 - 204 degrees C, burns with a yellow, sooty flame. Sodium fusion indicates that halogens, nitrogen and sulfur are not present. It is not soluble in water, dilute sodium bicarbo..
the reaction of peroxydisulfate ion s2o82- with iodide ion i-is s2o82-aq 3i-aq 2so42-aq i3-aqfrom the following data
One of the sodium oxoacid salts of chlorine (there are 4 salts, each containing Na, Cl, and O) was analyzed. A 17.00 g sample was found to contain 3.68 g Na and 5.67 g Cl.
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