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Chemistry Questions
What is the pH after a 50 mM phosphate buffer, pH 6.9 (pKa = 7.2) is...
An eccentric chemistry professor (not mentioning any names) stops in every day and orders 250ml of...
Which of the following has AG°f= 0 at 25°C? There may be more than one correct...
Purifying Mg2+ from sea water. Aqueous sodium hydroxide is added to an aqueous solution that contains...
A 50.0-ml sample of a 1.00 m solution of cuso4 is mixed with 50.0 ml of...
4. If 50 liters of 12% hydrochloric acid (HCl) is mixed with 80 liters of 40%...
A green laser pointer emits light with a wavelength of 528 nm. the frequency of this...
Determine the number of moles of C2H5OH in 147g of C2H5OH. Please show the conversion and...
In a polar aprotic solvent, which nucleophile will be more reactive? H2O or OH- I know...
Give and describe the two main mechanisms of surface enhanced raman spectroscopy
a. The solubility of potassium hydrogen carbonate (KHCO3) (100.115 g/mol) in water is 33.7 g/100 mL...
C2H4(g) + H2O(g) to CH3CH2OH(g) H° = -45.6 kJ and S° = -125.7 J/K The equilibrium...
A total of 619 cal of heat is added to 5.00 g of ice at −20.0...
Use Ksp values to determine the solubility of each sparingly soluble substance in its respective solution:...
Explain what is the principal source of H3O+ ions in 1.0 x 10-10 M HCl?
Explain why you would use NaOH for a liquid-liquid extraction of 2-phenylphenol. Explain in terms of...
How many grams of adipoyl chloride (1.25 g/mol) are in 20 ml of a 2% (v/v)...
What is the molarity of a NaOH solution if 1.01 mL of the solution was required...
Describe three different mechanisms or devices for selecting specific wavelengths for use in spectrophotometers. 3.What are...
Rubbing alcohol is composed of C, H and O only. Combustion of 0.255 g of rubbing...
How many moles of oxygen are in 8.9E-1 moles of CO_2 2 ? Only give...
For a Van der Waals gas, the following equations hold. P = nRT/(V−nb) − a(n/V)2 dU...
How many milliliters of a 5.17 M H2SO4 solution are needed to neutralize 70.00 mL of...
How much heat, in kilojoules, is released when nitrogen and hydrogen react to form 70.5 grams...
The first order reaction SO2Cl2 → SO2 + Cl2, has a half-life of 8.75 hours at...
44.0 grams of an unknown metal at 99.0oC is added to 80.0 grams of water (cs...
Answer ALL parts to this question: In X-ray diffraction, when parallel beams of X-rays are applied...
Hydrogen iodide decomposes slowly to H2 and I2 at 600 K. The reaction is second order...
You have 4.7 moles of a gas that undergoes a Carnot Cycle where THot=305 K, and...
When you ingest the common food preservative, sodium benzoate, it reacts with the hydrochloric acid in...
Explain the effect of the solvent on the reaction kinetics with respect to an SN1 mechanism?...
A precipitate of Fe(OH)3 is contaminated with Mg(OH)2. Explain how to can get rid of the...
The pH of a buffer prepared by mixing 0.05 mol of acetic acid (pKa=3.86) with 0.03...
How many signals for 5 methly 3 hexanol ? Can you please show all the steps?...
(1). The equilibrium constant, K, for the following reaction is 1.32×10-3 at 565 K. NH4Cl(s) =NH3(g)...
What would be the newton projection for benzene?
A solution made by dissolving NaCl in water has a mole fraction of NaCl of 0.15....
For each of the following sets of ionic substances, arrange the members in order of increasing...
What element is being reduced in the following (unbalanced) redox reaction, which occurs in acid? Ag(s)...
9) The magnitudes of the colligative property constants Kf and Kb depend upon which of the...
1. Write an equation for the base hydrolysis of methyl benzoate by KOH. 2. How many...
A 2.450×10−2 MM solution of glycerol (C3H8O3C3H8O3) in water is at 20.0∘C∘C. The sample was created...
two molecules of sucrose (C12H22O11) contains how many oxygen atoms?
Two separate reactions are conducted as outlined below. Reaction 1: 4 drops of benzyl chloride in...
1. Covalent compounds, dissolved in water, never produce conducting solutions. True or False 2. All acid-base...
It is desired to neutralize a solution X that contains a mixture of potassium iodide and...
Step 1: React phenol with sodium hydroxide Step 2: Add 2-Chlorobutane The product(s) is/are __________. an ether...
A sodium sulfate solution was prepared by dissolving 825 g of Sodium sulfate in 1850 ml...
Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and...
If 62.5 mol of an ideal gas is at 1.71 atm at 18.70 ∘C, what is...
Draw the line structure for 2-bromo-3-methylhexane and draw all the Newman projections around C3-C4 carbon, C3...
element A has two isotopes. The first isotope is pressnt 18.48% of the time and has...
a) How many moles of folic acid (C19H19N7O6) are there in 246 micrograms? b) How many...
Calculate the mass % of naphthalene (C10H8) in 50.0 g of methanol to obtain a vapor...
Preface: Aluminum foil was reacted will hydrochloric acid and copper 2 chloride. The copper solid from...
provide ALL the steps for the synthesis of tryptophan from phtalimido malonic ester and all the...
Consider a baseball of mass m=0.5 kg moving with a velocity v0= 50m/sec a good fast...
Calculate the wavelength for each electron transition in a hydrogen atom, and indicate the type of...
Determine the threshold frequency for metal X (w = 3.7 X 10-19 J).
In carbon tetrachloride solution, cis-cyclohexane-1,3-diol exists mainly in the conformer with two axial OH groups, but...
What is the mole fraction of phosphoric acid in a solution that is 5% by mass...
What is the electron configuration of Zirconia (ZrO2)??
A sample of solid CaCO3 was added to an empty 1.00 L container at 500K and...
A 10.0 mL sample of 0.75 M CH3CH2COOH(aq) is titrated with 18.0 mL of 0.30 M...
What is the expected major product from the reaction of (3R,4S)-2,2,3-trimethyl-3,4-epoxypentane with sodium methoxide and methanol?...
Which of the following compounds is most soluble in butane (CH3CH2CH2CH3)? Please be specific CH3CH2CH2CH2Cl CH3CH2CH2CH2OH...
HOw to calculate Corrected Observed Hydrogen Wavelengths (nm) and Theoretical Hydrogen Wavelengths (nm)?
Which of the following solids is a molecular crystalline solid? A. NaCl B. CO2 C. Ca...
Question 7 options: When a polysaccharide undergoes hydrolysis, the __________. (what would go in this blank...
When manganese(IV) oxide (MnO2) reacts with hydrochloric acid (HCl), chlorine gas (Cl2) is produced as follows....
a lake has been acidified to a pH of 4.332. if the lake has a volume...
Problem 1 Concept: Elementary Particles 0 Not finished! Level: Basic Emission of which particle below will...
A sample of 0.2140 grams of an unknown monoprotic weak acid was dissolved in 25.0mL of...
Explain the history of chemistry in medicine in 5-6 paragraphs with 1 or 2 examples. Write...
1.) How many moles of NaOH (aq) are needed to neutralize 3.2 mol H2SO4(aq)? 2.) How...
This question is regarding the Reaction of 1,3-Butadiene and Maleic Anhydride We used an aqueous sodium...
I know that Grignard reagents can react with alcohol, BUT why can't we generate a Grignard...
If 4.69 g of CuNO3 is dissolved in water to make a 0.750 M solution, what...
A plant extract was analyzed by UV-vis spectroscopy and the following data were obtained: What is...
An NaCl solution is prepared by dissolving 20.0 g NaCl in 150.0 g of water at...
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