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Gold has a density of 19.3 g/cm^3. Current price is $1192 per troy ounce. What is...
Explain why BCC metals undergo a brittle to ductile transition and fcc metals do not in...
Is one Sievert of radiation equal to one Curie?
What is the purpose of 4% calcium chloride solution, and trisodium phosphate on preparation of soap...
How many grams of Cl2 gas are contained in 3.00L of the gas at 100.0 Celsius...
Near the endpoint of the Na2CO3-HCl titration, it is necessary to heat the analyte solution almost...
A solution of formic acid (HCOOH) has a pH of 2.25. How many grams of formic...
Calculate the internal energy for a system that absorbs 100kJ of heat and had 65kJ of...
Perform the following unit conversions. Use scientific notation if the value is larger than 1000 or...
What volume of 0.0105-M HBr solution is be required to titrate 125 mL of a 0.0100-M...
Rate constants for the reaction NO2(g)+CO(g)?NO(g)+CO2(g) are 1.3M?1s?1 at 700 K and 23.0M?1s?1 at 800 K....
What is the pH when 2.77 moles of HN3 and 4.45 moles of N3- are mixed...
If we have a mixture of Phe, pI 5.5; Thr, pI 6.5; Asp, pI 3; His,...
Consider the following mechanism step 1: A+B --> AB step 2: AB+C --> AC+B -------------------------- overall:...
What volume of a 0.750 M solution of hydrochloric acid, a solution of HCl, can be...
been postulated that the normal (noninfectious) form of prion differs from the infectious form only in...
what causes you not get all starting material back when you complete simple distillation and fractional...
Three gas phase systems are studied. The first consists of Ca2+ and S2- at 300 nm;...
In an aspirin tablet.....What would be the consequence of competing equilibria, such as from other ingredients...
which model is better to use to adequately describe the adsorption system of oxalic acid onto...
The decomposition of solid ammonium hydrogen sulfide to form ammonia gas and hydrogen sulfide gas is...
what is the empirical formula of a hydrocarbon which produces 2.703 g of CO2 and 1.108...
An old container has 188g solid substance. Analysis of this solid showed that the solid is...
28.06 g of ethene (C2H4) gas is mixed with 147.84 g of oxygen (O2) gas. The...
The chlorofluorocarbon compound, CCl3F, is a substance for which no natural source is known and is...
Part A Calculate the pH of 0.100 L of a buffer solution that is 0.23 M...
Calculate the theoretical yield 2-step synthesis from trans-cinnamic acid to phenylpropynoic acid, using the trans-cinnamic as...
Molecular orbital calculations can be used to model the location of electron density from unpaired electrons...
natural occurrence of thallium, how and where ?
Compound A has a partition coefficient of 3.0 when it is partitioned between Ch2Cl2 and water....
Each of the solvents listed below are commonly used in experiments to extract organic compounds from...
which suits oxalic acid in charcoal better , Langmuir isotherm or Freundlich Isotherm and why
The kinetics of an enzyme were studied in the absence and presence of two different concentrations...
Bismuth-210 is beta emitter with a half-life of 5.0 days. Part A If a sample contains...
Besides the physical properties that will be investigated in this experiment, name two other physical properties...
A---Which of the following solutions of strong electrolytes contains the largest total number of ions? Show...
1. AgCl (s) <-> Ag+ (aq) + Cl- (aq) Ksp = 1.8 x 10^-10 Ag+ (aq)...
Place the following compounds in order. CH3CH2CH2CH2CH3 CH3CH2CH2CH2OH CH3CH2CH2CH3 KCl A B C D (Enter the...
Which pair of molecules can form a hydrogen bond? a) HCN, HCl b) CH4, NH3 c)...
1. A 100 mL solution of 0.200 M HF is titrated with 0.100 M Ba(OH)2. What...
How many grams of sodium hydroxide would be required to produce 10.0 g of sodium stearate...
Automotive air bags inflate when a sample of sodium azide, NaN3, is very rapidly decomposed. 2NaN3(s)...
Hydrogenation plays an important role in the industrial food chemistry of fats and oils. What are...
As a technician in a large pharmaceutical research firm, you need to produce 200. mL of...
What is the silver ion concentration in a solution prepared by mixing 369 mL of 0.387...
Name two methods by which hexylamine could be separated from benzoic acid.
A galvanic cell consists of a zinc electrode in 0.0514 M Zn(NO3)2 and a nickel electrode...
Why is it useful to calculate a % recovery for recrystallization even though the number doesn’t...
. What do the configurations of H, Li, Na, K have in common? Be, Mg, Ca?...
1.What is the pH after the addition of 20.0 mL of 0.14 M HCl to 80.0...
what is the difference between an alkane and an alkyl group?
How would the following experimental errors change the calculation of the number of mg of ascorbic...
The vapor pressure of benzene is 9959 Pa at 20oC, and the vapor pressure of toluene...
1. Which of the following pairs of redox molecules is NOT in the proper order of...
What is the color of liquid 2-Methylphenol? Is liquid 2-Methylphenol acidic or basic? Is 2-Methylphenol soluble...
Ionic bonds generally form between ____. 1. an element with a small E i and an...
Sodium azide, NaN3, os used in the air bags of automobiles. What is the volume of...
What intermolecular forces are present in a sample of FCOH?
Describe, how an ion-selective electrode works. State four types of ion-selective electrodes.
104. Calculate the net constant value (Knet) for the following reactions: 2NON2+O2 Kc=2.4X1030 NO+ ½ Br2NOBr...
at constant n, T and V, the pressure of a real gas is (higher, lower) than...
The vapor pressure of liquid iodomethane, CH3I, is 100. mm Hg at 266 K. A 0.271...
An aqueous solution that 2.10M in AgNO3 is slowly added from a buret to an aqueous...
Solve. Please show all work, thank you!! 1. The first-order rearrangement of CH3NC is measured to...
A chemist dissolves 222.mg of pure potassium hydroxide in enough water to make up 80.mL of...
Determine the range of milliliters of .15 M HCl needed to completely titrate a .35 g...
You are attempting to build a galvanic cell using the reaction: Cu2+ + 2 e- --->...
The oxalate ion has the formula C2O42- and is often abbreviated "ox". A metal ("M") oxalate...
The myoglobin content of some human muscles is about 8 g/kg. In sperm whales, the myoglobin...
Major oil spills are often combatted by applying surfactant formulations such as Corexit. In an effort...
what is the entropy change for the vaporization of 3 mol H2O at 100 degrees Celcius...
what is the molarity of a nitric acid solution that is 65%(w/w) and a density of...
A) When the Cu2+ concentration is 1.07 M, the observed cell potential at 298K for an...
1) 2MgO(s)+O2(g)---->2MgO(s) Write ionic equation and net ionic equation. Redox yes or no If Redox: element...
Silver chloride is only slightly soluble in pure water at 25∘C:AgCl(s)⇌Ag+(aq)+Cl−(aq)K=1.8×10−10Calculate the concentration of Ag+ and...
If the equilibrium constant for the decomposition of acetylene (C2H2) to solid carbon and molecular hydrogen...
Are the operators L+ = Lx + iLy and L− = Lx − iLy Hermitian? Prove...
Determine the chemical exergy of diesel fuel at 25 ◦C, 1 atm, in kJ/kg . Model...
The reaction between Al3+ and EDTA is too slow for direct titration. To a 25.00 mL...
What mass of hydrogen is produced when 0.400 moles of water react completely in the following...
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