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Small quantities of hydrogen can be prepared by the addition of hydrochloric acid to zinc. A...
Consider the following reaction: 2NO(g)+O2(g)→2NO2(g) Estimate ΔG∘ for this reaction at each of the following temperatures...
in terms of ksp why does the addition of NaOH precipitate magnesium ions but not calcium...
A solute with a partition coefficient of 7.4 is extracted from 25 mL of water into...
A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate...
23) What is the molar solubility of AgCl in 0.20 M NaCN if the colorless complex...
In organic chemistry, which reaction mechanisms permit the loss of a Hydride, and why?
1. In an air-conditioned room at 19.0 ∘C, a spherical balloon had the diameter of 50.0...
What is the percent mass of Copper in each of the following compounds? a. CuSO4·5H2O b....
balance they following reaction under basic conditions MnO4-(aq)+S2(aq)--->MnS(s)+S(s)
4. You have been given 2 compounds, [Co(NH3)5(SO4)]Be and [Co(NH3)5Br]SO4, in separate vials. However you do...
TLC plates could be made of different particle size of silica. If one used a smaller...
A 1.31 L buffer solution consists of 0.281 M propanoic acid and 0.104 M sodium propanoate....
2) Ethylenediamine tetraacetic acid (EDTA) is a hexaprotic acid that was used as a food preservative...
A 1.36 L buffer solution consists of 0.184 M butanoic acid and 0.331 M sodium butanoate....
The specific heat capacity of liquid water is 4.18 J/g-K. How many joules of heat are...
An 80.0 mL sample of 0.200 M ammonia is titrated with 0.100M hydrochloric acid. Kb for...
What's true of non-covalent interactions? Much of organic chemistry and inorganic chemistry is concerned with covalent,...
Consider the following reaction at 279 K: 2 A (aq) + 1 B (aq) → 2...
INORGANIC CHEMISTRY All of the following molecules are isoelectric: PO4 3-, SO4 2-, AND CLO4 -....
I did a lab using the bomb calorimeter and my experimental value for heat of formation...
usually the concentration range chosen for collecting UV-Vis spectra of compounds in solution is 0.10-0.15M, why...
GAS CHROMATOGRAPHY 100.0 uL of n-butyl alcohol is added to 5.00 mL of your unknown sample....
How many mL of 0.1 M NaOH must be added to 40 mL of 0.06 F...
Wastewater from a winery contains approximately 1.8 g/L glucose (C6H12O6), 1.8 g/L fructose (C6H12O6) and 250...
In words -- and fairly briefly -- describe what occurs in: the light reactions of photosynthesis...
1) You have been asked to develop a walk-way made of glass across a deep canyon...
2. a. Calculate the pH of a 0.6 M solution of HN3 with Ka = 1.9
1)If a Solution absorbed yellow light, what color would the solution appear to be? 2)Calculate the...
Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is How many grams...
1. A student was given a sample of an anhydrous salt to anazlyze, using the procedure...
For biological and medical applications we often need to consider proton transer equilibria at body temperatue...
1. A buffer is composed of .4 mole H2PO4- and 0.4mol HPO4^2- diluted with water to...
explain inter molecular fr observation I2 in H2O and hexane and ethanol
This week's experiment, it is crucial that you vent your separatory funnel often. Why is it...
Which of these solutions is a buffer? please explain each one. 1) a 50mL solution of...
Given the number of moles of benzoic acid necessary to react with 40mL of a 0.1...
what is the experimental molar mass of potassium hydrogen phthalate if a solution containing 1.862 g...
the column in a gas chromatograph is polar, and a mixture of a polar compound and...
Titanium atoms have electrons in 1s, 2s, 2p, 3 s, 3p, 4s and 3d orbitals. Which...
How much dry solute would you take to prepare each of the following solutions from the...
Calculate the theoretical yield of the solid precipitate. Show your work. mass of CaCl2 =2.0 g...
Describe the steps in the mechanisms beginning with the major molecule, including chemical equations that take...
determine percent yield of each isomer. (the weight of the other isomer is the difference between...
A sample of gas occupies 500.mL of STP. what volume will the gas occupy at 85.0...
In the Electrolytes and Nonelectrolytes lab you measured the conductance of 0.02 M solutions of KNO3,...
Determine the energy of 1.10 mol of photons for each of the following kinds of light....
What is the percent yield for this reaction under the given conditions? Express answers to three...
Consider the following half-reactions. Which of these is the strongest reducing agent listed here? I2(s) +...
an air bag was determined to have a maximum volume of 4.5 liters. if the most...
2. In the lab, you grind up 2.205 g of an unknown compound and dissolve it...
(a) Calculate the percent ionization of 0.00840 M hypochlorous acid (Ka = 3e-08). % ionization =...
I know this is a silly question, but I'm only asking this because I honestly can't...
Calculate the pH of 0.249 M piperazine (C4H10N2, a di-basic compound, "B"). Calculate the concentration of...
Does the P-block have 6 orbitals and 36 electrons?
Find the temperature (in K) above which a reaction with a delta H of 123.0 kJ/mol...
a concentration cell has Fe(NO3)2 on two sides of a semi permeable membrane. On one side,...
sodium nitrate + copper(II) sulfate. what are the molecular, total, and net ionic equations?
Consider the listed gases at 298K. Which of these gases will cool upon expansion? Which of...
Determine the molar concentration of ethanol (CH3CH2OH, 46.08 g/mol) in a wine that is 14% ethanol...
It takes 486.0 kJ/mol to convert sodium atoms to Na+ ions. Sodium atoms absorb and emit...
1. a. For each set of solutions predict which one should have the lower pH. i....
What are the clear cut differences and similarities in the acid hydrolysis of [Co(NH3)5MoO4] + and...
Four 1L samples of liquid at 293K and 1atm pressure are subjected to 1000atm of pressure...
Determine the concentrations of BaBr2, Ba2 , and Br
Which of the reactions favor formation of the products? Check all that apply. Check all that...
Calculate the standard cell potential at 25 ∘C for the reaction X(s)+2Y+(aq)→X2+(aq)+2Y(s) where ΔH∘ = -597...
Part B Arrange the following ionic compounds in order of decreasing amount of energy released in...
Which Brønsted-Lowry acid is not considered to be a strong acid in water? Which Brønsted-Lowry acid...
An aqueous solution contains 0.22 M ammonium chloride. One liter of this solution could be converted into a...
Citric acid has three pKa's: 3.13, 4.76 and 6.39. If you add sufficient solid NaOH to...
How many grams of Mg(OH)2 are required to obtain a 0.01M hydroxide solution.
1. A certain solution has a concentration of 1.0 x 10-4 M of OH-. Which of...
A constant current of 114.5 A is passed through an electrolytic cell having an impure copper...
Will a precipitate form when 0.17 L of 2.1 x 10^-3 M Pb(NO3)2 is added to...
A sample of argon gas has a volume of 735 mL at a pressure of 1.20...
3. (a) VO, TiO and NiO all have defect rock salt structures. Explain what this statement...
For the balanced reaction 2SO3 (s) <--> 2SO2 (g) + O2 (s) Kp= 1.32 at 627...
1) If I need to make voltaic cell with standard potential 1.477 V using Pt electrode...
a stream containing 25% mass methanol in water is diluted with a second stream containing 10%...
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