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Analyze the extraction of the salicylic acid-naphthalene mixture by using two solvents: saturated aqueous sodium bicarbonate and water?
Analyze the sublimation of the crude naphthalene?
Analyze the recrystallization of crude the salicylic acid?
what is the average density of the sun in units of grams per cubic centimeter? The volume of a sphere is (4/3)?^3.
The formula of carbon tetrachloride is CCl4. this means that 1 mole of C combines with 4 moles of Cl to form this compound. How many moles of Cl would be needed to react with 2 moles of C
How many liters of water vapor can be produced when 15L C3H8 are reacted with 15L O2? all gases are at the same temperature and pressure.
A solution is prepared by dissolving 4.21 g of a non-electrolyte in 50.0 g of water. If the boiling point raise by 0.203ºC, explain what is the molar mass of the solute? The boiling point elevation constant for water is 0.512 ºC/m.
Why are the bond angles of methane, ammonia, and water different for each even though the electron domain geometry is the same for each
a solution of koh is prepared and is standardized against 0.5418 g of khp. the phenolphthalein endpoint was reached by
What is the pH of a mixture of 100.0 ml of 0.01M NaH2PO4 and 100.0 ml of 0.01 M Na2HPO4.
when 10.0g of water at 100.0 oc isadded to 100.0g of water at 10.0ocin a calorimeter the final temperature is 18.0oc.
A pitcher containing .9 L of water at 3 degrees celceus is removed from the fridge. How many kilojoules are needed to warm the water to a room temperature of 35 degrees celceus
magnesium ions can be precipitated from seawater by theaddition of sodium hydroxide.how much sodium hydroxide in grams
Compute why you must have a liquid flowing back through the fractionating column in order to get the separation of the components during fractional distillation
Grignard reagents (RMgX) are extremely strong bases and nucleophiles. Comlete the following reactions which demonstrate these two properties.
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