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Cyclopropane contains 85.7%C and 14.3% H by mass. At 50C and .984 atm pressure, 1.56g cyclopropane has a volume of 1L. What is the molecular formula?
How many grams of ethylene glycol C2H6O2 must be added to 1.15kg of water to produce a solution that freezes at -3.68 degrees celsius?
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
Why does phenolphtalein change colour during the production of gas?
Find the concentration and pH solution - What is the pH of a solution of 0.65 M acid and 0.51 M of its conjugate base if the pKa = 5.30?
Strontium metal crystallizes in a cubic unit cell which has an edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr metal is 2.54 g/cm3
Consider the balanced chemical reaction shown: 4PH^3 (g) + 8O^2 (g) ---> 6H^2O (l) + 1P^4O^10 (s) In a certain experiment, 8.92g of PH^3 reacts with 9.60g of O^2(g)
The extent of fragmentation for ionic compounds can be derived by comparing the molality expected if no dissociation with what is actually obtained from experiment.
Which one of the following is not a redox reaction?
A 90.0 g piece of hot iron is placed in a calorimeter containing 125 mL water at 19.8 degrees celcius. If the final temperature of both the water and the iron is 24.6 degrees celcius, what is the initial temperature of the hot iron?
If the average collection period is 55 days, what is the receivables turnover?
A 2.50-g sample of a large biomolecule was dissolved in 37.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C.
Enough of a monoprotic acid is dissolved in water to produce a 1.59 M solution. The pH of the resulting solution is 2.88. Calculate the Ka for the acid. Ka=?
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