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a 0.753 mole of an organic solution is dissolved in 111 grams of benzene (FW=78.00 g/mole), at 40.0 C. The vapor pressure of the benzene is 92.00 torr at this temperature; The vapor pressure of the solute is negligible. What is the vapor pressure of the solution?
A 1- flask is filled with 1.20 g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm.
At 0.0 degrees C, if the volume of air is 1.7 mL and the pressure of the atmosphere that day is 695 mmHg, what is the number of moles of air?
When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 °C and a pressure of 854 mmHg?
when an acid reacts with a metal, what is one of the usual products? a) carbon dioxide
How many moles of hydronium ion are neutralized by one teaspoonful of Extra strength Maalox plus?
if 9.0L of NO are reacted with excess O2 at STP, what is the volume in liters of the NO2 produced?
A 30.0-mL sample of 0.165 M propanoic acid is titrated with .300 M KOH. Calculate the pH after the following amounts of base is added
Phenolphthalein is one of the most common indicators. What are its colors in acidic and in basic solutions?
How many ml of 0.05 M HCl solution would be required to completely neutralize 25.0 ml of 1.0 M Ba(OH)2 solution?
Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years
A mixture of acetone and toluene is boiled at 60 C and at 760 mm Hg. What is the ratio of acetone to toluene in the vapor phase?
What is the final concentration of Na+ if 250 ml of 0.3 M Na Cl is added to 750 ml of 0.125 M Na2SO4?
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