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An aqueous antifreeze solution is 48.5% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.062 g/cm3. Calculate the molality, molarity and mole fraction of ethylene glycol
What is the percent by mass of a solution in which 60. g of NaOH are dissolved in sufficient water to make 100 g of solution?
A 200 mL stock solution contains 0.9 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
A sample of ethanol (C2H5OH) has a mass of 43.8 g.
A 14 mL solution of succinic acid has a concentration of 10 mM. This solution is titrated with 8 mM lithium hydroxide. Determine the pH of the solution at each of the titration volumes listed below:
1) what is the molarity of a kf(aq) solution containing 116g of KF in 1.00 L of solution? 2) What is the molarity of an H2SO4 solution if .25L os the solution contains .75 mol of H2S04?
Calculate the concentration of nitrate ions in the resulting solution (don't forget about the stoichiometry), and determine the uncertainty in that value. What is the primary contribution to the unc
Which of the following is a typical property of an ionic compound?
To obtain Ksp for PbI2, we must calculate [Pb2+] in each equilibrium system. This is most easily done by constructing an equilibrium table.
Calculate the molar concentration of OH - ions in an 1.37 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
A 3.50 g sample of solid Mg(OH)2 was treated with 50.0 mL of 0.500 M H2SO4(aq). After the reaction was over, some of the Mg(OH)2 remained undissolved. Calculate how many g of solid Mg(OH)2 remained.
Please comment on The mineralogy, chemistry and origin of alkaline igneous rocks with illustrated examples.(Unlimited words)
How many moles of dinitrogen tichloride correspond to 645 mg of dinitrogen trichloride? How many nitrogen atoms would be required to produce that amount of dinitrigen trichloride.
How many mL of water at 23degrees celsius with a density of 1.00g/mL must be mixed with 180mL(about 6oz) of coffee at 95 degrees so that the resulting combination will have a temperature of 60degree
Use average bond energies to estimate the energy change (in kJ/mol) for the reaction (all bonds are single bonds except as noted):
A system at equilibrium or striving to reach equilibrium responds in a way that best ac- commodates or reduces any stress placed upon it. What is this known as in chemistry?
What is the balanced equation for copper (II) hydroxide + acetic acid (HC2H3O2)? and what is it's reaction, single, or double replacement.
The equilibrium constant is 100. Calculate the concentrations of O2 present at equilibrium
Explain how society depends on the accuracy and precision of measurements for products sold by the retail industry, such as a gallon of gasoline, a bushel of corn, or a liter of bottled water.
Determine the concentration in weight percent of InAs that must be added to GaAs to yield a unit cell edge length of 0.5820 nm. The densities of GaAs and InAs are 5.316 and 5.668 g/cm3, respectively
Calculate the heat released when 2.57 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
In CO2, the first excited vibrational level is 30 kJ/mol above the ground level. Calculate the population in the first excited and ground vibrational level at 30°C.
If 50.0 mL of 0.150 M CaCl2 is added to 50.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?
Al(OH)3 + 3HCl ---> AlCl3 + 3H2O. Determine the moles of acid neutralized if a tablet contains 0.200 mol Al(OH)3