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Write balanced equations that described the formation of thefollowing compounds from elements in their standard states and usethe appendix C to obtain the values of their standard enthalpies offormation (a) HBr (g), (b) AgNO3(s).
The concentration of SO42- (aq) in a sample of river water can be determined using a precipitation titration in which a salt of Ba+ (aq) is the standard solution and BaSO4 (s) is the precipitate formed. What is the concentration of SO42- (aq) in a..
Metallic iron can be made by the electrolysis of molten Fe2O3. How many minutes are needed to plate out 14.00 g of Fe from molten Fe2O3 using 6.42 A current
What is the redox number for nitrogen in a molecule of nitrogen dioxide
What is the pH of a solution containing 50.00 mL of 1.0 M HCl and 50.00 mL of 1.0 NH3? The Kb for NH3 = 1.8 x 10-5.
Describe: a) its use in medical treatment, b) list a common over the counter medicine that once contained this compound and c) why phenolphthalein is being phased out in over the counter medicine formulations
If 26.67 mL of a standard 0.1650 M NaOH solution is required to neutralize 25.18 mL of H2SO4, what is the molarity of the acid solution
the density of solutions are assumed to be the same as water. if the density of all 3 solutions was actually 1.1 gml
A solution that has a K+ concentration of 5.00ppm is to be prepared from solid KCl. Assuming a solution density of1.000g/mL how many miligrams of KCl must be added to make 1.00L solution?
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC Delta T to calculate the temperature change of the 304 g of water.
With aqueous H2CrO4, compound A was oxidized to an optically inactive dicarboxylic acid C, C6H10O4. Give structures for compounds A, B, and C; do not specify stereochemistry.
Discuss how plastics are used in everyday life and cutting edge technology and what the pitfalls are of plastics.
what is the concentration (in mole/L or M) of Cu2+ and NO3 in the final solution. Remember your significant figures. B) If there is an impurity of Cu2+ in the water you are using to perform the dilutions
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