12:01 knewton.com Question H- OH но H- OH H- OH CH,OH The structure of glucose is shown above. What will be the product formed by oxidation of glucose by the Tollen's reagent? Select the correct answer below: но. OH но OH H- CH,OH

The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by doing a famous experiment in 1775. In this experiment Lavoisier found that mercury(II) oxide, when heated, decomposed into liquid mercury and an invisible and previously unknown substance: oxygen gas. 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid mercury(II) oxide (HgO) into liquid mercury and gaseous dioxygen. 2HgO + heat 2Hg (1) + O2(g) 2. Suppose 40.0 mL of dioxygen gas are produced by this reaction, at a temperature of 110.0 °C and pressure of exactly 1 atm. Calculate the mass of mercury(II) oxide that must have reacted. Be sure your answer has the correct number of significant digits. X x10 A 18 Ar 8.

Suppose 1.1780g CuCl, and 2.2773g of Na,PO, were reacted as in this experiment. What is the percentage yield of Cu,(PO,), if 0.9856g of Cu, (PO,), was isolated? (Use 380.12g/mol for Na,PO, and 170.48g/mol for CuCl, and 434.60g/mol for Cu,(P0,),) Be sure to check for the limiting reactant.

10.4 mL of ethanol is allowed to undergo combustion with an excess of gaseous oxygen to produce carbon dioxide and water vapor.  What mass of carbon dioxide will be produced from this combustion?  The density of ethanol (C2H6O) is 0.789 g/mL. (3 sf)

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6. In one experiment, a mixture of 0.250 mol of methane gas was burned in 1.25 mol of ogen sina sealed container. Find the limiting reactant and calculate the theoretical yield of water produced. 2.34 g of water was actually produced in the experiment, what is the percentage yield? (9) CH,(g) + 02(9) Co,(g) + H20G) Reply... :

Calculate the protein count of 100 g of a food, with a total amount of proteinof 20 g and the following composition of amino acids for each g of protein: 200 mg oflysine, 125 mg valine, 182 mg glycine, 290 mg proline, and 43 mg leucine. TwoWhole eggs (100 g) contain 12.8 g of protein and 86 mg of leucine, 70 mg of lysine,66 mg of valine for every g of protein.

Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2): СаC2 (s) + 2 H20 () — Са(ОН)2 () + СэH2 (€) Production of 6.5 g of C2H2 (molar mass: 26.00 g/mol) requires consumption of g of H20 (molar mass: 18 g/mol). O A 4.8 x 102 О в. 18 O. 4.8 x 10-2 O D. 9 O E. 4.5

(5.5, 5.7 & 5.8) Classify the following reaction. Ba(NO3)2(aq) + K₂SO4(aq) --> O acid-base reaction O gas-forming reaction O decomposition reaction O precipitation reaction

A 19.51 g sample of impure methylamine, which contains 72.58% (by mass) of CH;NH: , is reacted with 30.81 g of pure oxygen gas: 2.1 4CH, NH,(2) + 90,(8) - 4C0,(8) + 10H,0(?) + 2N;(8) 2.1.1 What is the percentage yield of this reaction if 5.54 g of nitrogen gas is collected? 2.1.2 In another experiment, this impure methylamine was used as follows: • An unknown mass of the impure compound is dissolved in enough water to make 500.0 m of solution. • 20 ml of this solution was transferred by pipette to a clean 250 ml volumetric flask and made up to the mark. • The molarity of the CH;NH; in the final solution was determined to be 0.103 M. Determine the mass of CH;NH; present in the original amount of impure compound used make this solution.