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Quartz, which contains one silicon atom and two oxygen atoms per formula unit, is the second-most-common mineral on Earth after feldspar. It is used as a gemstone, as well as in pressure gauges, oscillators, resonators, wave stabilizers, heat-ray lamps, and prismastic lenses, and in the manufacture of glass, paints, abrasives, and precision instruments such as watches.
1) What is the chemical formula for quartz?
2)How many oxygen atoms are in 2.20 of quartz?
If a reaction mixture initially contains 0.159 M SO2Cl2 , what is the equilibrium concentration of Cl2 at 227 C?
A 130 mL stock solution contains 1.3 M Na3PO4. When 10 mL of the stock solution is diluted to 21 mL, what will the concentration of Na+ ions be?
what is the concentration of sodium ions in the resulting solution?
Three solutions 61.0 mL of 0.2 M KNO3; 63.0 mL of 0.3 M Ca(NO3)2; and 69.0 mL of 0.385 M KCl were poured together to make one new solution.
The flourocarbon compound C2Cl3F3 has a normal oiling point of 47.6 degrees C. The specific heat of C2Cl3F3(liquid) and C2Cl3F3(gas) are 0.91 J/gK and 0.67J/gK respectively. The heat of vaporization for he compound is 27.49 kJ/mol.
Draw a Lewis structure for each of the following molecules, and then use the VSEPR theory to predict the molecular deometry of each.
Separation of Amines and Carboxylic Acids Using Extraction, Initially have a sample of a water-insoluble, neutral organic compound dissolved in 50 mL methylene chloride that may be contaminated with
535 g piece of copper tubing is heated to 91.5°C and placed in an insulated vessel containing 58.5 g of water at 29.5°C. Assuming no loss of water and heat capacity for the vessel of 10.0 J/K, what is the final temperature of the system (c of copp..
The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. Calculate the energy in J of the electron when it is in the n= 4.00 level.
Octane has a density of 0.692 g/ml at 20 degrees celsius . How many grams of O2 are required to burn 16.0 gallons of C8H18 ?
show work on the mineral greenockite is yellow sulfide of cadmium that is 78.0% cadmium and 22.0% sulfur. determine the empirical formula of greenockite.
Calculate the concentration of ions in the following saturated solutions. Al3+] in Al(OH)3 solution with [OH -] = 2.6 10-9 M
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