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What is the density of a gas in g/L that has a molecular weight of 144, if the temperature and pressure is 25 degree C and 750 mmHg?
a) 2.90b) 7.44c) 1920d) 960e) 5.80
A solution is prepared by dissolving 246 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
Initially a mixture contains 0.795 mol each of N2 and O2 in an 8.00 L vessel. Find the equilibrium composition of the mixture at 3900 degrees Celcius.
what are the main sources of error in a calorimetry experiement. describe at least three errors.
What is ?, the electromotive efficiency to three significant figures?? Open the hint panel below for the definition of electromotive efficiency. (d) What is the pH of an unknown that gives a reading of 19.6 mV with this electrode at 30°C?
During a refueling outage, workers discover black, soft material in the reactor core (obviously a Foreign Materials Exclusion Area breech). To help identify the breech source, you are asked to determine the material
what is the theoretical yield of zinc iodide, if a 2.0-g sample of zinc was used with 6.5 grams of iodine
If a sample containing 2.01 mL of nitroglycerine (density = 1.592 g/mL) is detonated, how many total moles of gas are produced?
How many grams of sodium sulfide are formed if 1.60 g of hydrogen sulfide is bubbled into a solution containing 2.13 g of sodium hydroxide, assuming that the sodium sulfide is made in 94.0 % yield?
The precipitate formed was washed and dried .Its mass was 0.287g.Find the mass of NaCl in the initial sample.
The pH of the solution is 2.81 after 15.00ml of base is added. Calculate the ionization constant,Ka, of lactic acid.
The specific heat of Al and water are 0.90 J/(goC) and 4.184 J/(goC), respectively. Calculate the equilibrium temperature.
A sample of granite contains various oxides of silicon, aluminum, sodium, potassium, calcium, and iron. Each of these oxides gives the granite a coarse-grained texture.
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