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Find the molar solubility of ZnS solid in a 0.500 M NaCN(aq)solution. The Ksp of ZnS...
NaCl + NH3+CO2+H2O--> NaHCO3 + NH4Cl if 9.93g of NaCl reacts with excesses of the other...
Calculate the mass of methane that must be burned to provide enough heat to convert 140.0...
Which of the following polypeptides is most likely to form an alpha helix? Explain? a) Cys-Arg-Ala-Gly-Asn-Arg-Lys-Ile-Leu-Glu-Thr-Tyr...
Hydrogen gas can be used in a chemical reaction to produce electricity. This type of electric...
An experiment was performed to determine the solubility and the solubility product constant of gallic acid,...
acetylene is generated by the reaction CaC2 + 2H20 --> C2H2 + Ca(OH)2 If excess water...
Write the chemical equations showing the dissolution of sodium chloride, naphthalene C10H8, potassium phosphate, and calcium...
calculate the composition of the vaopur above a solution containing 735 g of h20 and 245...
Calculate the concentrations of all species in a 0.580 M Na2SO3 (sodium sulfite) solution. The ionization...
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0...
For the following set of atoms and ions, arrange the members in order of decreasing size:...
Many of the biochemistry experiments and cell cultures need to be pH buffered in a narrow...
A suggested mechanism for the gas phase decomposition of nitrous oxide is: step 1 slow: N2O...
Part 1: Draw: a) 4-s-butyloctane b) n-propylbenze Part 2 : Identify the main type of bonding...
Using tables of solubility products, write the net ionic equations for what should happen in the...
Draw the structure corresponding to each of the following names. a. 4−methyl−1−hexene b. 5−ethyl−2−methyl−2−heptene
Purification of the crude isopentyl acetate is performed by distillation. The entire product is added to...
Mercury(II) sulfide, HgS, occurs in two crystalline forms, called “red” and “black.” For the conversion of...
You have 111.0 g of solute Q dissolved in 140-mL of water. The distribution coefficient between...
Compared with a basic solution of pH12 the same volume of an acidic solution at pH...
Determine if exposure by oral ingestion to the chemicals xylene, toluene, arsenic and hexavalent chromium poses...
7.36‡ Suppose that an iron catalyst at a particular manufacturing plant produces ammonia in the most...
(a)calculate the theoretical yield of carbon dioxide from the reaction of 33.3 g of propane (C3H8)...
0.175 g of a gas occupies 242.0 mL at STP. What is its molecular weight?
Determine the equilibrium constant, Keq, at 25°C for the reaction 2Br– (aq) + I2(s) Br2(l) +...
The sign of ΔHrxn and ΔSrxn for several different reactions are given. In which case is...
Lab 14 Molar Volume of Gases: Find the molar mass of the NaHCO3 using the following...
Assuming 100% efficiency in converting this energy to electricity , how much 235U (in grams) would...
A 1.4-L container of liquid nitrogen is kept in a closet measuring 1.1 m by 1.0...
The mole fraction of an aqueous solution of sodium acetate is 0.519. Calculate the molarity (in...
Blast furnace gas in a steel mill is available at 25°C to be burned for the...
Fe3+(aq, yello) + SCN-(colerless) ≈[FeSCN]2+(aq,red) A sttudent studying this equilibrium begins with an equilibrium mixture that...
Should a law of conservation of volume exist?
A fatty acid hydroxylase enzyme has a Km for palmitic acid of 7.31 micromolar and a...
In a lab experiment, Dibenzalacetone was produced from a cross condensation between an Benzaldehyde and Acetone....
You are asked to prepare 500. mL of a 0.300 M acetate buffer at pH 5.00...
Explain how knowing the order of a reaction (based on its Rate Law) gives the ability...
consider the reaction of 1-methltcyclopentane with water and Cl2 to answer questions a-e. A.) this reaction...
Explain Why some elements are diatomic.
This problem deals with the probabilistic interpretation of the hydrogen wavefunction. a. Calculate the probability that...
During the combustion of methane (CH4), 35.2 g of methane reacts with 45.3 g of oxygen....
Titration problem? Which method of solving is the correct way? 100.0 mL OF 0.100 M NH3...
What is the hydronium ion concentration of 0.0038 M Ba(OH)2 solution?
Which of the following has the highest molar solubility? a) AgCl: Ksp = 1.8 x 10^-10...
1. The addition of 3.27 g of Ba(OH)2 · 8 H2O to a solution of 1.14...
How much of a 1.30 M sodium chloride solution in milliliters is required to completely precipitate...
1. A dramatic classroom demonstration involves cooling a balloon from room temperature (299 K ) to...
A 2.00 gram sample of Copper (II) acetate produced 2.48 grams of a Copper (II) Formate...
1) Circle the appropriate atom. a) Of these five, the largest atom is: Li B N...
Lab Name: Analysis of an Unknown Mixture Using the Ideal Gas Law Purporse: Determine the percent...
Give one unique example of an object with more wave-like behavior and one with more particle-like...
Using enthalpies of formation and Hess's Law, calculate the heat of combustion for each of the...
How many moles of Hcl will remain if 1.0 g of CaCO3 is added to 50...
What are the three steps that are used to regulate the flux through glycolysis? (BIOCHEMISTRY)
1. Express the answer in correct units and with correct number of significant figures: (2 *...
A certain aqueous solution of a low-molecular-weight solid nonelectrolyte freezes at -0.64 oC. For this solution,...
2. A container holding solid scandium in equilibrium with its vapor at 1690 K shows a...
The dissolution of 5.25 g of a substance in 565 g of benzene at 298 K...
Which is true of a free energy diagram for an E1 reaction? It proceeds through a...
Part A Calculate the pH of 0.100 L of a buffer solution that is 0.23 M...
A student followed the procedure of this experiment, but instead of using lead strips, the student...
For an ionic compound, the magnitude of the lattice energy (ΔHo lattice) is proportional to the...
8. In general, metals are characterized by which of the following properties (three best answers): A)...
A 295-mL flask contains pure helium at a pressure of 747 torr . A second flask...
what are the mmols of: 3.0 mL (2.7 g) glyceryl trioleate (MW=885.44916), 7.0 mL ethanol (MW=45.06844),...
using seperation and recrystalization techniques separate separation of .10 grams of oxalic acid, .40 grams of...
Cumene, Ethylbenzene, Toluene, 2,2,4-Trimethylpentane, Methylcyclohexane and Cyclohexane What should be the order of reactivty and why?...
A) For the reaction CH4(g) + H2O(g) ---> 3H2(g) + CO(g) delta H° = 206.1 kJ...
A) A student determines the value of the equilibrium constant to be 2.57×1014 for the following...
A solution of H2SO4(aq) with a molal concentration of 6.80 m has a density of 1.318...
Calculate the molarity, mole fraction, and normality of sulfuric acid. If the mass is 95% and...
Calculate the change in pH to 0.01 pH units caused by adding 10. mL of 2.25-M...
An equilibrium mixture of the following reaction was found to have [SO3] = 0.401 M and...
A single atom is accelerated to a velocity of 1.5% the speed of light. At this...
List the chemical shift, splitting pattern and j value for each proton of 4-methylumbelliferone.
Calculate the concentrations of Ag+(aq) and Ni2+(aq) once the cell is “dead.” Intial concentration for both...
You are asked to prepare 1.2 l of a 0.05 M tris buffer at pH= 7.8....
carbon monoxide is to be burned with air at atmospheric pressure to produce a gad containing...
Why does basicity increase up a column while nucleophilicty decreases down a column? Electron density increases...
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