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A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C, the normal boiling point of CCl4 is 61.2?C. The boiling point constant for CCl4 is 4.95 K · kg/mol. What is the molar mass of the compound?
How much heat is required to warm 227 g of ice from -44.5°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C.
Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
Determine the mass percentage concentration of a sodium hydroxide solution produced by mixing 50.0 mL of a 25 % (density=2.45g/mL) sodium hydroxide solution with 10.0mL of H 2 O?
Ionization energy is the energy required to remove an electron from an atom in the gas phase. The ionization energy of lead is 715.0 kJ/mol.
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 q). How many milliliters of coffee can be obtained from 1 g of coffee beans.
In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask.
When NH3 is prepared from 28 g N2 and excess H2 the theoretical yield of NH3 is 34 g. When this reaction is carried out in a given experiment, only 30. g is produced.
What would the net ATP yield if a muscle cell takes a glucose molecule, stores it as part of a glycogen molecule and later releases it and sends it through glcolysis.
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
if 0.100 M HCl were titrated with 0.100 M NaOH, what would be the pH of the solution: a. before the addition of NaOH? b. at the equivalence point? c. at the halfway point?
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