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what is the diffrence between anatomical theory of diease, humoral concept of diease, and germ diease.
What is the molarity of the HCl solution if 270 mL of the HCl solution reacts with magnesium to produce 7.40 L of H_{2} gas measured at STP.
Calculate the final temperature of 33 mL of ethanol initially at 13 degrees Celsius upon absorption of 657 J of heat. (density of ethanol =0.789 g/mL).
A piston has an external pressure of 5.00 atm. How much work has been done if the cylinder goes from a volume of 0.130 liters to 0.540 liters.
A sample that weighs 0.1586 grams contains only sodium chloride and potassium chloride was dissolved in water. It took 22.90 mL of 0.1000 AgNO3 to precipitate all of the chloride present.
549 mL of hydrochloric acid is exactly neutralized with 292 mL 0.450 M calcium hydroxide solution. What is the concentration of the acid solution?
a rigid container is filled with liquid acetone at 20 degrees C and 1 bar. through heat transfer at constant volume, a pressure of 100 bar is generated
How many moles of ammonium ions are released when 1.6 mol of ammonium phosphate, (NH4)3PO4, is dissolved in water?
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 rm mL of a household ammonia solution, what is the molar concentration of the ammonia?
The combustion of octane produces carbon dioxide and water. If you start with 10.0 mol of octane, what mass of water (in grams) would you expect to produce?
The atomic mass of element X is 33.42 amu. A 21.83-g sample of X combines with 80.32 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
how many possible trisubstituted derivatives c6h3x2y can be obtained from the meta disubstituted benzene c6h4x2? (ignore directive effects of the substituents x and assume that all positions on the ring are accessible to the reagent y+).
Determine how many kgs of methane (CH 4 ) are in completely insulated piston with the given properties: Pressure = 3 bar absolute. Volume = 2 cubic meters.
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