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Ethylene glycol, C2H4(OH)2, is the main component of antifreeze. What mass percentage of ethylene glycol in water must be used to reduce the freezing point of the mixture to -9.34 deg-C? (K_fp for water is -1.86 deg-C/m).
PCl5 + 4H2O > 5HCl +H3PO4. How many total moles of acid are formed when starting with 4.5 g of PCl5 and excess H2O.
Calculate the freezing point and boiling point of a solution of 383 g of glucose dissolved in 400 g of water
an airplane is pressurized to 650 mmhg. The partial pressure of oxygen is 137 mmhg. If the partial pressure of oxygen drops below 100.mmhg.
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
if 223 g of ethanol are recovered after 1.63 kg of glucose react, what is the percentage yield of the reaction
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
Occupies 6.0 cubic meters at a pressure of 1.5 atm. The pressure is then expanded to 2.0 atm. The temperature remaining constant, what is the new volume of the gas?
Determine after how many days will one-sixteenth of a given amount of radon-222 remain and Determine the values of Delta E and Delta H for the system?
Calculate the reaction quotient Qc and find out at which temperature and
How many grams of calcium chloride should be formed from the reactions of hydrochloric acid and calcium hydroxide? If the reaction in 2.4 only produces 3.0 g calcium chloride, calculate the percentage yield of calcium chloride.
When 3.8 L of propane gas is completely combusted to form water vapor and carbon dioxide at 350°C and 0.936 atm, what mass of water vapor results?
Using a sample of 0.0355 gram of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Calculate the molar mass of the unknown compound if the camphor freezes at 157.7°C upon cooling.
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