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1. Compound A gives 79.37% C and 8.88% H by elemental analysis as well as gives a molecular ion peak of 136 on low resolution mass spec.
Explain what is the molecular formula?
2. Explain what is the Degree of Unsaturation for Compound A?
What is the maximum amount of aluminum sulfate that can be formed?
How do scientists know what is the composition of something. i.e. when they mention that "oxygen was obtained" how can they identify the element or compound without a doubt
How much heat is produced in burning 5 mol of C2H2 under standard conditions if both reactants and products are brought to 298 K
Explain what is the pH of a solution made by mixing 30.00mL of 0.10 M acetic acid with 30.00mL of 0.10 M KOH? Presume that the volumes of the solutions are additive. Ka = 1.8 x 10-5 for CH3CO2H.
Draw a concentration cell for 0.10 M Cu2+ and 2.0 M Cu2+ cell, show the following on each compartment clearly. (a) All the component of each cell, including the concentrations in anode and cathode half cells.
Use the Nernst Equation to calculate Ecell at 25 C for electrolysis of aqueous sodium chloride if the concentration of chlorine in the brine solution is 4.5 M and the partial pressure of Cl2 is 0.001 atmospheres.
A compressed air tank carried by scuba divers has a volume of 9.5 L and a pressure of 130 atm at 20 C. What is the volume of air in the tank (in liters) at STP?
How many milliliters of a 0.300 M lead(II) nitrate solution are needed to react with 50.00 mL of a 0.500 M potassium chromate solution?
The density of a liquid sulfur compound is 1.14 gmL1. This compound contains 23.7% sulfur. How many milliliters of the compound must be burned to obtain 6.40 g of SO2? Molar Mass SO2 64.1 gmol
Methyl Orange is an acid-base indicator. In dilute solution, at pH greater than 4.4, it is yellow. At pH=3.2 the solution appears red. Draw a structure of the species that is formed at the lower pH of the acid proton adds to the azo nitrogen atom ..
Calculate the molecule weight of the liquid If 2.31grams of the vapor of a volatile liquid is able to fill a 498-ml flask at temperature of 100 degree Celsius and pressure of 775 mm Hg? also determine the density of the vapor under these conditi..
calculate the ph of a buffer prepared by dissolving 240.0g of ammonium chloride and combining it with 400.0 ml of 12.0m
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