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A soft drink contains an unknown amount of citric acid, C3H5O(COOH)3. 10.0ml of the soft drink requires 6.42 ml of 9.580 x 10^-2 M NaOH to reach the equivalance point in the following reaction.
Calculate the boiling point of a solution formed by dissolving 1.45 grams of napthalene, C10H8, in 7.85 grams of cyclohexane, C6H12.
Silver metal crystallizes in a face-centered cubic structure. The radius of the silver atom is 144.5 pm. Calculate the density of the metal in g/cm3.
Determine all concentrations after 15 minutes. What is the chlorine concentration. What is Q after 15 minutes?
Calculate the wavelength of light required to remove an electron from a ground state hydrogen atom.
1.0 M aqueous solutions of the following substances are prepared. Which one would you expect to have the lowest electrical conductivity
Balance the following redox equation using the smallest integers possible and select the correct coefficient for the hydrogen sulfite ion.
The rate constant of a chemical reaction increased from 0.100 s-1 to 2.70 s-1 upon raising the temperature from 25.0 degree C to 39.0 degree C.
For each of the reactions, calculate the mass (in grams) of the product formed when 15.51g of the underlined-?vAssume that there is more than enough of the other reactant.
After simple distillation, could GC have been used to determine purity of the distillate (final compound). If so, briefly and completely explain
What is the role of HClO. ClO-(aq) + H2O(l) <=> HClO(aq) + OH-(aq) FAST. I-(aq) + HClO(aq) => HIO(aq) + Cl-(aq) SLOW
determined using x rays methods. Remember a, b, c are unit cell dimensions . X', y' and z' are intercepts. Only the information you need is given . You may encounter as unusual rarely formed face
Magnesium oxide decomposes into magnesium and oxygen. If 16.12 of magnesium oxide decomposes to form 9.72 of magnesium, what mass of oxygen gas is also released in the reaction
The compound butane consists of only C and H. If 0.531g of butane is burned in oxygen and produces 1.61g of CO2 and 0.823g of H2O, what is the empirical formula of butane
If 3.65 mL of vinegar needs 41.5 mL of 0.150 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.20 qt sample of this vinegar
Describe and explain how each of the following experimental errors or variations might affect your results.
Look at the table of polyatomic ions and determine what happens to the charge on the polyatomic ion, phosphate when an H+ is added to the formula. What is the new name
If 57.0 mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 754 mg sample of Na2SO4 , what is the molarity of the solution
For each of the following processes, indicate whether the signs of S and H are expected to be positive, negative, or about zero.
How many milliliters of 0.123 M H2SO4 are needed to neutralize 0.200 g of NaOH
Calculate the osmotic pressure of a solution containing 24.9g of glycerin (C3H8O3) in 238.0mL of solution at 300 K.
How many milliliters of 0.130 M HCl are needed to completely neutralize 54.0 mL of 0.104 M Ba(OH)2 solution?
You have a stock solution of 14.2 m NH3 . How many milliliters of this solution should you dilute to make 1350 mL of 0.220 M NH3
For each of the reactions, calculate the mass (in grams) of the product formed when 3.51g of the underlined reactant completely reacts. Assume that there is more than enough of the other reactant.
When a 5.49-g sample of gaseous hydrogen bromide dissolves in 33.0 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 21.00 oC to 62.66 oC. Calculate H in kJ/mol HB