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If 16.0 grams of aluminum oxide were actually produced, what is the percent yield of the reaction below given that you start with 10.0 g of Al and 19.0 grams of O2? Reaction: 4Al + 3O2 → 2Al2O3
How many moles of sulfur dioxide, SO2 are contained in a 5.0 L container at STP?
A major source of sodium metal is produced as a result of electrolysis of molten sodium chloride. What magnitude of current is required to produce 1.0 kg of sodium metal in one hour
Question- Calculate the pH at the equivalence point for the titration of 0.200 M methylamine (CH3NH2) with 0.200 M HCl. The Kb of methylamine is 5.0× 10-4. pH=
An electron in a hydrogen atom is excited with electrical energy to an excited state with n= 2. The atom then emits a photon. What is the value of n for the electron following the emission
the oxygen gas emitted by an aquatic plant was collected over water at a temerature of 293 k and a total pressure of 755.2 mmhg.
acetone and water are miscible meaning they are soluble in all proportions. would it be possible to perform an
What is the pH of a solution prepared by mixing 50 ml of a .01055 M solution of lactic acid with 30 ml of a .0125 M NaOH. ka for lactic acid = 1.4E-4. What is the new pH if you add 15 ml more of the NaOH to the above solution
The carburizing gas holds the surface composition at 1% carbon for all t > 0. If D=1.4 x 10^-7 cm^2/sec: (a) Calculate the time required at the carburizing temperature
Consider the reaction, 2 D(g) + 3 E(g) + F(g) => 2 G(g) + H(g) When [F] is decreasing at 0.60 mol/Ls, how quickly is [G] increasing
Calculate the molecular weight of a gaseous compound if 0.75 gram occupies a volume of 336 mL at STP
Potassium chloride is used in the kitchen as a salt substitute (in place of sodium chloride). Suppose you were planning to make ice cream but discovered too late that you were out of table salt for making the ice bath.
Calorimeters and heat capacity, If 2.500 g of Mg is burned in a constant volume calorimeter with a heat capacity of 1.10 kJ/degrees Celsius containing 1.500 L
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