For the experiment "limiting reactant" and after filtering the precipitate, you checked the filtrate (supernatant) to identify the limiting reactant. 2Na3PO4 + 3BACI2 Ba3(PO42 (s) + 6NACI If you added N 3PO, to the filtrate (supernatant) and a white precipitate was formed, this means that: O a. None of the mentioned O b. BaCl, is the limiting reactant Oc. Both BaCl2 and Na3PO4 are limiting reactants O d. Na3PO, is the limiting reactant O e. NazPO, is an excess Clear my choice

For the experiment "limiting reactant" and after filtering the precipitate, you checked the filtrate (supernatant) to identify the limiting reactant. 2Na3PO4 + 3BACI2 Ba3(PO42 (s) + 6NACI If you added N 3PO, to the filtrate (supernatant) and a white precipitate was formed, this means that: O a. None of the mentioned O b. BaCl, is the limiting reactant Oc. Both BaCl2 and Na3PO4 are limiting reactants O d. Na3PO, is the limiting reactant O e. NazPO, is an excess Clear my choice

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter11: Stoichiometry

Section: Chapter Questions

Problem 71A

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Ten mL of concentrated H3PO4 (91.7% by mass, d=1.69g/mL) was accidentally poured into a beaker containing 20.0 g of NaOH. Not all the NaOH was consumed. How many grams of NaOH were left unreacted? The equation for the reaction is H3PO4(aq)+3OH(aq)3H2O+PO43(aq)
4.47 Silicon carbide is, an abrasive used in the manufacture of grinding wheels. A company is investigating whether they can be more efficient in the construction of such wheels by making their own SiC via the reaction SiO2+3CSiC+2CO (a) If this reaction consistently has a yield of 85%, what is the minimum amount of both silicon dioxide and carbon needed to produce 3400 kg of SiC for the manufacture of cutting wheels? (b) The silicon dioxide is to he obtained from sand and the carbon is derived from coal. If the available sand is 95% SiO2 by weight and the coal is 73% C by weight, what mass of coal is needed for each metric ton of sand used?
Magnesium metal (a component of alloys used in aircraft and a reducing agent used in the production of uranium, titanium, and other active metals) is isolated from sea water by the following sequence of reactions: Mg2+(aq)+Ca(OH)2(aq)Mg(OH)2(s)+Ca2+(aq)Mg(OH)2(s)+2HCl(aq)MgCl2(s)+2H2O(l)MgCl2(l)electrolysisMg(s)+Cl2+Cl2(g) Sea water has a density of 1.026 g/cm3 and contains 1272 parts per million of magnesium a5 Mg2+(aq) by mass. What mass, in kilograms, of Ca(OH)2; is required to precipitate 99.9% of the magnesium in 1.00103 L of sea water?
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Many over-the-counter antacid tablets are now formulated using calcium carbonate as die active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting die stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a burp). Write die balanced chemical equation for this process.
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