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Ephedrine was once used in diet pills that could be purchased without a prescription. Ephedrine is composed of 72.7% C, 9.15% H, 8.49% N, and 9.68% O. What is the empirical formula for ephedrine?
Calculate the molecular weight of the compound? Given that Kf=1.86 and the compound in not ionic.
Determine what volume would it occupy at zero degree Celsius temperature at same pressure? Express your Answer in units of mL
Compute the quantity of work(W) that is associated with a 9.5 Litre expansion of a gas against the given pressure of 755mm Hg
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
Given that Iron(III) oxide or ferric oxide (molar mass = 159.7 g/mol) reacts with Carbon monoxide (molar mass = 28.0 g/mol).
Compute the mass of air in an air-filled tire and the also determine the mass of He in a helium-filled tire
Calculate the molar mass of the compound if given that normal freezing point of C6H6 = 5.5 oC , the freezing point depression constant for C 6 H 6 = -5.12 o C/m .
An electron traveling at the velocity of 3.7 105 m/sec has an uncertainty in its velocity of 2.34 105 m/s. determine the uncertainty in its position?
Give an acceptable name and identify the functional group; and
Calculate the mass percent of carbon in the compound and calculate What is its final temperature
As per the Haber Process(N2(g)+ 3 H2(g)= 2 NH3(g) ) ,what mass of nitrogen should you see in the reaction If you must produce 700g of ammonia? Percent yield of this reaction = 70%
determine how do you know if there must be a precipitate or not and Show whether or not a precipitate will form if The Ksp of PbI2 =9.8×10-9
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