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A 250.0 g sample of french fries is placed in a calorimeter with 500.0 g of water and an initial temperature of 21.0 C. After combustion of the french fries the water has a temperature of 48.0 C. What is the heat content of the french fries in kJ/g? a) 22600 kJ / b) 282 kJ / c) 70.9 kJ / d) 22.6 kJ / e) 2.63 kJ
a-Calculate [OH-] of a 2.25×10^-1 M aqueous solution of hydroxylamine (HONH2, Kb = 1.1×10^-8).? part b-Calculate the pH of the above solution. pls show the step wise answer since i'm struggling with chem. (the full answer) to get the full rate:)
a phosphorous acid buffer needs to be prepared to a ph of 5.92 given a 120ml solution of 25mm phosphorous acid how many
Calculate the percent ionization of 0.085 moles/l of lactic acid in a solution containing 0.050 moles/l sodium lactate
A solution to replace potassium loss contains 40.mEq/L each of K+ and Cl-. How many moles each of K+ and Cl- are in 1.5L solution
What is the maximum concentration of Cd2+ that can exist in a solution in which the S2- concentration is 2.5 x 10-6? Ksp(CdS) = 8.0 x 10-27
The models you have just studied represent achiral molecules. Their mirror images are identical. They are optically inactive. Any molecule that has a plane of symmetry is achiral.
Draw the protonated species, clearly showing where protonation occurs. Draw all possible resonance structures of the conjugate acid of the product, and use these to explain why the product is so much more basic than a typical ester.
95 grams of sodium acetate is dissolved in enough water to make 75 mL of solution. Calculate the pH of the resting solution
A 30.0 mL sample of a diprotic acid is titrated with 0.255 M KOH. If 59.5 mL of base is required to reach the second equivalence point
For the reaction 3C2H2(g)---> C6H6(l) at 25 C the standard enthalpy change is -631 kj and the standard entropy change is -430 J/K. Calculate the standard free energy change at 25 C
Which compound has the smallest molar mass?
1) The standard potential of the cell Ag(s)|AgCl(s)\\Cl-(aq)||Ag (aq)|Ag(s) is 0.58 V at 25 °C. Calculate the equilibrium constant for the cell reaction.
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