Which of the following are protic solvents? I. AO,ハI CiHy COOH, CHy OH, HzO血、入,CHgCH2OH, 三NIN.ミN

The protic solvent can be defined as the solvent containing a hydrogen atom directly connected to…

Answered: Which of the following are protic…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter2: Chemical Compounds

Section: Chapter Questions

Problem 63QRT

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Boron has two naturally occurring isotopes, ¹⁰B (19.9%)and ¹¹B (80.1%). Although the B₂ molecule does not existnaturally on Earth, it has been produced in the laboratory andbeen observed in stars. (a) How many different B₂ moleculesare possible? (b) What are the masses and percent abundancesof each?
H2CO (g) = 219.0 O2 (g) = 205.1 CO2 (g) = 213.7 H2O (l) = 69.9
C7H16(g) + O2(g) → C2H2(g) + O2(g) → C3H8O(g) + O2(g) → HCl(aq) + NaOH(aq) → CH3OH + O2(g) → NaI(aq) + Cl2(g) → Li(s) + N2(g) → C3H6(g) + O2(g) → AlCl3(s) → Ca(s) + HCl(aq) → LiOH(aq) + Fe(NO3)3(aq) →
Cocaine (C₁₇H₂₁O₄N) is a natural substance found in cocaleaves, which have been used for centuries as a local anestheticand stimulant. Illegal cocaine arrives in the United States eitheras the pure compound or as the hydrochloride salt(C₁₇H₂₁O₄NHCl). At 25C, the salt is very soluble in water(2.50 kg/L), but cocaine is much less so (1.70 g/L). (a) Whatis the maximum amount (in g) of the salt that can dissolve in50.0 mL of water? (b) If the solution in part (a) is treated withNaOH, the salt is converted to cocaine. How much additionalwater (in L) is needed to dissolve it?
In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are correct. C3H6(g)+4.5 O2(g)->3CO2(g)+3H2O(g)
A student caried out this experiment and obtained the following data: Patm = 656.7 mm Hg Vinitial = 0.30 mL Mass of Alka-Seltzer sample = 0.123 g TH2O = 27.0°C Vfinal = 17.05 mL Determine the following: a. Calculate the number of moles of carbon dioxide present. b. Calculate the mass of NaHCO3 present in the sample. c. Calculate the mass % of NaHCO3 in the Alka-Seltzer.
C2H5OH= (-234.8) O2= (0) CO2= (-393.5) H2O= (-285.8)
Two basic laws of chemistry are the law of conservation of mass and the law of constant composition. Which of these laws (if any) do the following statements illustrate? (a) Lavoisier found that when mercury(ll) oxide, HgO, decomposes, the total mass of mercury (Hg) and oxygen formed equals the mass of mercury(ll) oxide decomposed. (b) Analysis of the calcium carbonate found in the marble mined in Carrara, Italy, and in the stalactites of the Carlsbad Caverns in New Mexico gives the same value for the percentage of calcium in calcium carbonate. (c) Hydrogen occurs as a mixture of two isotopes, one of which is twice as heavy as the other.
A mixture of CuSO4 and CuSO4.5 H2O has a mass of 1.245 g. After heating to drive off all the water, the mass is only 0.832 g. What is the mass percent of CuSO4.5H2O in the mixture? (See page 98.)
Paracelsus, a sixteenth-century alchemist and healer, adopted as his slogan: The patients are your textbook, the sickbed is your study. Is this view consistent with using the scientific method?
According to the law of conservation of mass, mass cannot be gained or destroyed in a chemical reaction. Why cant you simply add the masses of two reactants to determine the total mass of product?
A jar contains some number of jelly beans. To find out precisely how many are in the jar, you could dump them out and count them. How could you estimate their number without counting each one? (Chemists need to do just this kind of bean counting when they work with atoms and molecules. Atoms and molecules are too small to count one by one, so chemists have worked out other methods to determine the number of atoms in a sample.)

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