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In a standardization titration involving hydrochloric acid and sodium carbonate, a student recoirded the following results for the volume of hydrochloric acid used against 10.00mL of the sodium carbonate solution : 15.60; 14.50; 14.70 aqnd 14.20. What is the average titre value of the acid?
Pure substances include: choose one below: elements only elements and compounds compounds and mixtures elements and mixtures all matter
Calculate the change in the mass of copper at the anode or cathode if the charge calculated above is passed through the cell described. Enter your answer as a positive quantity in mg. Mass change at the electrode = ? mg
Why should care be exercised in the preparation of the column to prevent air bubbles from being trapped in the absorbent
What is the solubility in moles/liter for copper(II) iodate at 25 oC given a Ksp value of 1.4 x 10-7. Write using scientific notation and use 1 or 2 decimal places (even though this is strictly incorrect!).
Compute G at 298 K if the reaction mixture consists of 6.9atm of H2, 5.0atm of F2, and 0.47atm of HF.
What is the rate constant for the reverse reaction at the same temperature?
one way to judge the accuracy of your calorimeter is to compare the results for a known system. examine you error of
In clavulanic acid there is a carbon-atom that that has an oxygen-atom, a nitrogen-atom, and a carbon atom attached to it
at 900K the following reaction has kp=.345: 2SO2(g)+O2(g)-->2SO3(g) Partial pressures of SO2 is .150 and of O2 is .455. What is the equilibrium partial pressure of SO3?
Assume the solution has the same specific heat as water and that you are using a perfect calorimeter with a heat capacity of zero. Calculate enthalpy of solution for sodium hydroxide in kj/mole
State the formulas of the three singly chlorinated isomers formed when 2, 2-dimethylbutane reacts with Cl2 in the presence of light.
what is the length of the unit cell when tantalum (atomic radius = 145 pm) crystallizes in a bcc structure
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