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Chemistry Questions
Let's say I purified a GST X protein on a glutathione column and i eluted my...
Which of the following events may occur when IR radiation is absorbed? 1. Relative nuclear spins...
calculate the pH when 15.0 mL of 0.140 M sodium carbonate is mixed with 12.0 mL...
A solution of 116 mL of 0.160 M KOH is mixed with a solution of 230...
Calculate the pH of a stock sodium lactate solution that has a concentration of 2.0M. Ka...
Draw a line-bond structure for CBrN. Explicitly draw all H atoms. You do not have to...
(i) Draw the electron distribution in the d orbitals of an octahedral Cu(II) complex and show...
Name a reagent that can convert a carboxylic acid into an acid chloride. Just provide the...
1.) How many millimoles of 10mg/L of potassium chloride if MW is 74.5? 2.) How many...
An unknown substance had a positive reaction with 2,4-DNP test. The unknown reacted like a secondary...
(A) when the concentration of a solute is less than its solubility, the solution is said...
When adding strong base to a buffer, why can we assume the equilibrium value of the...
You have a 3.00-L container filled with N₂ (MM = 28.02 g/mol) at 298.15 K and...
The fluoride rinse in dental offices usually contains sodium fluoride. Sodium fluoride can be prepared from...
Write the structure of an L-aldohexose that yields a meso compound on treatment with warm, aqueous...
Please identify if these molecules are polar or non-polar? phenyl methanol, cumene, methyl benzonate, acetaphenone, acetanilide...
Consider the reaction: Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s) at 49 ∘C , where [Fe2+]= 3.80 M and [Mg2+]= 0.310 M...
1a, A strontium hydroxide solution is prepared by dissolving 10.45 g of Sr(OH)2 in water to...
What mass of Sr(OH)2 should be completely neutralized by 20.0 mL of 0.25 M of hydrochloric...
According to Amontons’s law or Gay-Lussac's law, which states that the pressure of a gas is...
Complete combustion of 6.60 g of a hydrocarbon produced 21.5 g of CO2 and 6.59 g...
Calculate the pOH and pH of the following aqueous solutions at 25 degrees Celcius (a) 0.0615...
What is the effect on the calculated density of the unknown metal or liquid under the...
By titration, it is found that 55.7 mL of 0.185 M NaOH ( aq ) is...
for the reaction 2CL2(g)+4NaOH(aq)-> 3NaCl(aq)+NACIO2(aq)+ 2H2O(1) how many grams of NaCl can be produced from 67.5g...
Calculate the pH in the titration of 50.0 mL of 0.120 M acetic acid by 0.240...
36) 1. An aqueous solution contains 0.219 M carbonic acid and 0.166 M nitric acid. Calculate...
which substitution and elimination reactions follows Zaitsev’s rule? SN1, E1, SN2, E2?
Automobiles and trucks pollute the air with NO. At 2000.0°C, Kc for the reaction At 2000.0°C...
Titration example: A 100.00mL sample of 0.200M NH3 solution is titrated with a standard 2.00M HCl...
When a substance absorbs light, what happens to the potential energy and kinetic energy of the...
Calculate the equilibrium constant K and the standard free energy change ΔrG˚ at room temperature for...
0.2 M CuSo4 + steel wool . What is the molecular equation ?
a 25.0 cm long cylindrical glass tube sealed at one end is filled with ethanol. the...
The change in enthalpy (ΔHorxn) for a reaction is -36.6 kJ/mol . The equilibrium constant for...
If 3.42 mol of an ideal gas has a pressure of 2.59 atm and a volume...
What is the total solubility of a weak acid (S) when pH of the solution equals...
In one of the General Chemistry experiments, you used a coffee-cup calorimeter to measure the heat...
When vandium(V) oxide is reacted with hydrogen gas at elevated temperatures (155 degrees celsius and 1...
a. By means of resonance forms show and explain ehy naphthalene tends to substitute alpha rather...
The enzyme carbonic anhydrase catalyzes the reaction CO2(g)+H2O(l)−→−HCO3−(aq)+H+(aq).CO2(g)+H2O(l)→ HCO3−(aq)+H+(aq). In water, without the enzyme, the reaction...
A catalyst lowers the activation energy for a particular reaction from 75.0 kJ mol−1to 40.0 kJ...
For 1,3-dimethoxycyclohexane: (i) determine how many asymmetric center and stereoisomers there are? (ii) draw the highest...
Write down an equation that combines the first and second laws of thermodynamics. Define the parameters...
1.The plasmid purified is a low copy number plasmid and the results indicate there is much...
Write the equilibrium expression for the following reaction: 2 NO2(g) + 7 H2(g) ⇔ 2 NH3(g) +...
A piece of solid cadmium weighing 37.6 g at a temperature of 311 °C is placed...
Draw the structure given the following information. Molecular Formula: C9H7OCl IR spectrum: 1610, 1684,2880, 2975, 3010,...
*****Note that formulas of organic compounds should first contain the carbon and then the hydrogen with...
1. Draw the mechanism of the reaction you performed in this lab using the same starting...
the lewis structure for the thiocyanate ion, SCN, requires resonance structures to describe its bonding situation....
Part A Phosgene (carbonyl chloride), COCl2, is an extremely toxic gas that is used in manufacturing...
The emission of NO2 by fossil fuel combustion can be prevented by injecting gaseous urea into...
name three usual defects of the electromagnetic lens and how do they differ from each other...
Problem Page An analytical chemist is titrating 199.2mL of a 0.5800M solution of formic acid H2CO2...
A chemist measures the mass of an empty bottle to be 21.8561 g. The chemist then...
what is the pressure of a gas sample in atm if the atmospheric pressure is 761...
Complete the table by using: NR = no (observable) reaction ppt = precipitate formed The first...
start with 0.6 of anthracene and 0.3 g of maleic anhydride and we get 0.72 g...
What is the major organic product expected from the reaction of 2-cyclohexene-1-one with sodium phenylacetylate followed...
What is the half oxidation reactions( in disinfection process) for : S-2 that give after oxidation...
1. Balance these reactions: a.) TiCl4 + H2O = TiO2 + HCl b.) WO3 + H2...
How many grams of manganese may be formed by the passage of 2.32 amps for 2.92...
Compound Hydroxybenzoate Solution APF is made according to the following formula: Methyl Hydroxybenzoate 8 g Propyl...
A researcher performs an asymmetric reduction of an achiral ketone to form a chiral alcohol. They...
1-The rate constant of a chemical reaction was measured at several temperature values and a plot...
Consider 1.0 L of a solution which is 0.45 M HF and 0.2 M NaF (Ka...
This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH3OC(CH3)3 A...
Does a reaction occur when aqueous solutions of iron(III) acetate and nickel(II) bromide are combined? yesno...
Calculate the molality of a 2.58 Molar (M) solution of HNO3(aq). d = 1.084 g/mL
the type of strain that that exists in boat conformers of cyclohexane but is absent in...
Draw the mechanism of each of the following reactions, if the reactant is forced to undergo...
Ex: Separation of Group 1 Cations (Pb+ and Ag+) 10 drops of unknown was place along...
which one of the following can nitrogen be both oxidized and reduced? a) N2O5 B)NH3 C)NO2
The combustion of propane may be described by the chemical equation C3H8(g)+5O2(g)⟶3CO2(g)+4H2O(g) How many grams of...
Enter your answer in the provided box. Consider the following reaction at a high temperature. Br2(g)...
At a certain temperature the equilibrium constant, Kc, equals 0.11 for the reaction: 2 ICl(g) ⇌...
According to the kinetic molecular theory of gases, which of the following gives rise to the...
How many grams of ammonium sulfate (note that Ammonia sulfate is ionic)should be added to 250.0...
Imagine that you are in chemistry lab and need to make 1.00 L of a solution...
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