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To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 23.0 L of 4.75 M acid to enough water to make 500. L. What is the mass of sulfuric acid per milliliter of the
Phosgene (COCl2) was used as a poison gas in World War I. Give the product that would be formed from the reaction of phosgene with the following reagent
What is the pOH of a Ba(OH)2 solution made by dissolving 0.081 grams of Ba(OH)2 in enough water to make 286 mL of solution
You tested Lysol cleaner in the lab with the FeCl3 reagent. A definite color change was observed. What conclusion can you make about the Lysol
An unknown had the chemical formula C4H10O. It showed a positive chromic acid test, a positive lucas test in 5 minutes, and a positive iodoform test. What is the structure of the unknown compound
A 12 L tank contains helium gas pressurized to 160 atmosphere. What size tank would be needed to contain this same amount of helium at 1 atmosphere
List the molecular geometry and the electron pair arrangement of all possibilities that would give a polar molecule when all the surrounding atoms are identical.
What is the white precipitate that forms while the reaction mixture is heated. The reaction is the hydrolysis of the ester Butyl benzoate yields products 1-butanol and benzoic acid.
In what volume ratio should you mix 1.0M solutions of NH4Cl andNH3 to produce a buffer solution having pH = 9.80
Calcium reacts with fluorine gas to produce calcium fluoride. How many moles of Ca will react with 1.0 moles of F2
The titration reaction is CO3^(2-) + 2H+ yields H2O + CO2 What is the concentration of HCl if 25.9 mL of HCl was needed to to react with 0.311 g of Na2CO3 to reach the end point
What is the [H3O+] in a buffer that consists of 0.30 M HCOOH and 0.20 M HCOONa? Ka=1.7x10^-4
You add 1.0mL of 1.00 M HCl to the buffer. Calculate the molarity of H3O+ added as HCl, and the final molarities of acetic acid and acetate ion at equilibrium. what is the new value of pH
If you were to precipitate lead, which of the 4 ions would you add and why; OH, CO3, S, SO4
What is the fraction of association (?) for the following potassium propionate solutions? Ignore activities. The Ka of propanoic acid is 1.34 x 10-5.
Given the reaction NH3 + H2O = NH4 + OH ; Under what conditions might it go to completion in either direction
A 12 liter tank contains helium gas pressurized to 160 atm. What size tank would be needed to contain this same amount of helium at 1 atm
A 10.0 ml sample of hcl is titrated with 0.5062 m naoh. 16.58 is required to reach the equivalence point. what is the molarity of the hydrochloric acid solution
Consider the reversible reaction: 2NO2(g)?N2O4(g)^-1 If the concentrations of both NO2 and N2O4 are 0.016 mol • L , what is the value of Qc? The answer is supposed to be 63 but how and why?
A sample of CH4 gas is observed to effuse through a pourous barrier in 5.08 minutes. Under the same conditions, the same number of moles of an unknown gas requires 8.63 minutes to effuse through the
What is the total pressure in the vessel just after the reagent gases are added (assume ideal behavior) and what are the mole ratios of the reagent gases in the vessel before the reaction begins?
Calculate the enthalpy change (energy needed) to convert 18 grams of ice at 0 Celcius to water vapor(steam) at 100 Celcius under constant pressure.
The procedure (paragraphs 2 and 3) states that the additions of bromobenzene, methyl benzoate and hydrochloric acid must be done slowly. What might happen if any of these were done too rapidly
If a divalent metal ion is inserted in the center of the porphine ring, its charge will exactly balance the two negative charges of the dianion. Write a balanced equation for the reaction of tetraph
Write a balanced equation for 0.1g sodium peroxoborate, 6 mL HCl. TO this acidified solution add KI dropwise.