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Aqueous hydrogen fluoride (hydrofluoric acid) is used to etch glass and to analyze minerals for their silicon content. Hydrogen fluoride will also react with sand (silicon dioxide).
(a) What is the equation for the reaction of solid silicon dioxide with hydrofluoric acid to yield gaseous silicon tetrafluoride and liquid water.
(b) The mineral fluorite (calcium fluoride) occurs extensively in Illinois. Solid calcium fluoride can also be prepared by the reaction of aqueous solutions of calcium chloride and sodium fluoride, yielding aqueous sodium chloride as the other product. What is the complete ionic equation for this reaction? What is the net ionic equation for this reaction?
A system undergoes a two-step process. In step 1, it absorbs 50. J of heat at constant volume. In step 2, it releases 5 J of heat at 1.00 atm as it is returned to its original internal energy. Find the change in the volume of the system during the..
Where is the epididymides located? Where is the Vasa deference located? Where is the prostate gland located?
Problem- Would a precipitate of silver acetate form is 22.0 mL of a 0.100 M AgNO3 were added to a 45.0 mL of 0.260 M NaC2H3O? Ksp of AgC2H3O2=2.3x10^-3
A 100.0 mg sample of a common organic compound containing C, H and S was burned in oxygen, forming 283.5 mg of CO2 and 48.4 mg of H2O. What is the simplest (empirical) formula of this compound
Nitroglycerin is explosive, decomposing violently via the reaction: 4 C3H5N3O9 (s) ? 12 CO2 (g) + 6 N2 (g) + 10 H2O (g) + O2 (g) If 25.0g of nitroglycerin explodes in a 10.0 L rigid container, calculate the total pressure of all gasses present and..
Explain what the approximate ranges Eg in eV for different colors--color meanings black, white, or actually having a true color green yellow, blue and so on.
When 6.533 g of silver nitrate reacts with excess aluminum, how many grams of silver metal and aluminum nitrate forms?
Question- A. Calculate the pH at the equivalence point for the titration of 0.160 M Methylamine with 0.160 M HCl. The Kb of methlylamine is 5.0 x 10^-4.
if your pipet was calibrated incorrectly so it transferred too muchsolution the density you calculated for the liquid
The professor's reasoning is good, because the color red is causing drivers of red cars to drive much faster than drivers of cars with other colors
The concentration of silicon in an iron-silicon alloy is 0.45 wt%. What is the concentration in kilograms of silicon per cubic meter of alloy
Which group includes only exothermic processes? Cu(s) + H2SO4(aq) 11. In the reaction shown below, which substances are dissolved in water?
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