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From a molecular/ionic point of view (bonds broken/formed), why is it that dissolving potassium nitrate endothermic while dissolving sodium carbonate is exothermic? Do bonds have anything to do with it?
What is the enthalpy of formation of CO(g) in kJ. 2CO(g) + O2(g) --> 2CO2(g). H reaction = -566 kJ ; ?H CO2(g) =-393.5 kJ/mol.
Addition of a catalyst lowers the activation energy by 15.0 kJ/mol. By what factor (k catalyzed/ k uncatalyzed) does the rate increase at 25 °C?
caffeine the freezing point of a solution prepared by dissolving 150 x 10-3g of caffeine in 10.0g of camphor is lower
A 0.456 gram sample of an unknown mono protic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
How is the characteristic of line spectrum determined in an element? Does each element produces a particular color?
Depict and name all of the structural isomers of a ketone with five carbon atoms in its longest chain and the molecular formula C5H10O
Could you compare acidity stability and reactivity of the Carboxylic acid Aldehyde and Ketone with the explanation
A source water mineral analysis shows the following ion concentrations in the water: Ca2+ = 70 mg/L, Mg2 + = 40 mg/L, and HCO3- = 250 mg/L as CaCO3. Determine the water's carbonate hardness, noncarbonated hardness, and total hardness.
Determine which of the following represent potential energy and which represent kinetic energy.
The mass spectrum of 1-ethyl-1-methylcyclohexane shows many fragments, with two in very large abundance. One appears at m/z = 111 and the other appears at m/z = 97.
2500 mol/min of a liquid stream containing 1% component B is to be treated by stripping with air. The incoming air contains 0.01% B, and the liquid leaving the stripper is to contain 0.01% B. The Henry's law constant is 1.5. What is the minimum re..
1A sample of a particular hydrocarbon is decomposed and it is found to contain 27.4 grams of carbon and 6.14 grams of hydrogen. What is the empirical formula of the compound
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