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Calculate the percent by mass of the solute CH2Cl2 in a solution made by mixing 453 mL of methylene chloride to 2.36 L of the solvent acetone
picometers and a crystal of metal X has a unit-cell that is faced centered cubic. Calculate the density of Metal X(Atomic Weight = 42.3g/mol)
a) Write the balance equation for the reaction. b) How many moles of O2 are needed to completly react with 4.0 mol of C2H6O? c) If a car produces 88 g of CO2, how many grams of O2 are used up in the reation
How much heat is required to warm 215 g of ice from -44.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
What is the rate law and rate constant for the decomposition of HF at 25 degrees Celcius
Determine the theoretical and percent yield of your product. In the IR spectrum of phenacetin which peaks are due to the following vibrations: (list the wavenumbers)
calculate the heat released when 2.57 l of cl2g with a density of 1.88 gl reacts with an excess of sodium metal at
Suppose that 25g of each of the following substances is initially at 27.0 degrees C. What is the final temperature of each substance upon absorbing 2.30kJ of heat
95.0 g of 0.0 degree C ice is added to exactly 100.g of water at 60.0 degree C. When the temperature of the mixture first reaches 0.0 degree C, the mass of ice still present is
Why is this only an approximation? Under what conditions can the selectivityremain temperature-independent?
the vapor pressure of pure water at 25 degc is 23.8 torr. what is the vapor pressure torr of water above a solution
If the volume of the cylinder is 4500 ml and the pressure of the N2 in it is 3.3 atm. (temperature is 25ºC). How many moles of nitrogen molecules are in the cylinder
Marble (calcium carbonate) reacts with hydrochloric acid solution to form calcium chloride solution, water, and carbon dioxide. What is the percent yield of carbon dioxide if 2.85 g of the gas is collected when 10.7 g of marble reacts?
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