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Please show calculations for these 2 questions.
How many grams of copper (II) fluoride are needed to make 587.2 ml of a 3.28 M solution?
The molar absorptivity constant of a particular chemical is 1.89 M·cm. What is the concentration of a solution made from this chemical that has an absorbance of 0.536 with a cell path length of 1.19 cm?
An aqueous solution of fotmic acid can be used to promote a ring-closing reaction
The following molecular equation represents the reaction that occurs when aqueous solutions of silver nitrate and calcium iodide are combined. 2 AgNO3(aq) + CaI2(aq) 2 AgI(s) + Ca(NO3)2(aq) Write the balanced net ionic equation for the reaction.
Provide the name of the major alkene product that results when (2S,3S)-2-bromo-3-methylpentane is treated with sodium methoxide
Write the balanced equation and calculate how many milligrams of barium sulfate are produced when 7.00 mg barium chloride and 8.00 mg copper (ii) sulfate are mixed. What is the percent yield if 2.80 mg barium sulfate is produced?
The initial temp of the calorimeter is 21.5 degrees celcius. the H2o is initially 98.1 degrees celcius and final temp of both the H2o and calorimeter is 39.2. Calculate the heat capacity in units of J/c. Use 4.184 j/g for specific heat of water
A sample of a gas occupies a volume of 1063 mL at 83ºC and 0.22 atm. What would be the new volume if temperature decreases to 34ºC and pressure increases to 1.22 atm
When do you expect to see signal distortions in 1H-NMR spectrums? What kind of distortions can occur? How can you minimize the appearance of distortions
The pH of 0.750 M sodium hypochlorite, NaClO, is 10.72. What is the pKb for this base?
The radioisotope argon-41 is used to measure the rate of the flow of gases from smokestacks. It is a γ emitter with a half-life of 109.2 minutes. Calculate the fraction of an argon-41 sample that remains after one day.
use the appropriate standard reduction potentials to calculate the value of K at 25 degrees Celcius for:
Determining the Lewis structures of small compounds is the first step towards determining the molecular shapes of larger and larger molecules. Determining the shapes of amino acids, proteins (enzymes), etc.
Write a resonance form for pyrrole with the nitrogen having a +1 formal charge. Be sure to include all lone pairs.
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