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What is the expected freezing point of an aqueous solution of 2.62 kg of nitric acid, HNO3 , in a solution with a total mass of 5.91 kg? Assume that the nitric acid is completely ionized.
What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
If vitamin A is 83.86% Carbon and 10.56% Hydrogen by mass then determine the the molecular formula this vitamin A.?
An oil bath maintained at 50.5 oC loses heat to its surroundings at the rate of 4.68 kJ/min. Its temperature is maintained by an electrically heated coil with a resistance of 60 operated from a 110 V line.
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. Discuss at least three potentially hazardous features associated with concentrated sulfuric acid.
The standard cell potential of the zinc-air battery is 1.65V. If at 25 dgrees celsius the partial pressure of oxygen in the air diffusing through its cathode is 0.21 atm.
Calculate the pH after 0.15 mol of NaOH is added to 1.00 L of 0.60 M HF and 1.01 M KF.
The reactant concentration in a first-order reaction was 6.80×10-2 M after 10.0 s and 4.40×10-3 M after 65.0s . What is the rate constant for this reaction?
Determine how much heat is released at constant pressure if 471.0 g of NO2 is produced,?
Consider the following isomerization reactions of some simple sugars and values for their standard Gibbs free energy ΔG °:
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
When a clear aqueous solution of calcium chloride (CaCl2) is mixed with a clear aqueous solution of sodium carbonate (Na2CO3), a white solid precipitate forms.
Calculate the specific heat capacity of the metal when the final temperature of the mixture =38.7?C.? (Assume that there is no energy lost to the surroundings.)
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