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The volume of a sample of a gas collected over water at 32.0 degrees Celsius and 752 Torr is 627 ml. What will the volume of the gas be when dried and measured at STP?
Sodium hydroxide (NaOH) has a lattice energy of -887 kJ/mol and a heat of hydration of -932 kJ/mol. How much solution could be heated to boiling by the heat evolved by the dissolution of 23.0g of N
It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13.0c to 24.3. What is the specific heat for the metal? Express your answer numerically, in J/g.C
Find the volume of methane measured at 298K and 0.940atm required to convert 1.47L of water at 298K to water vapor at 373K.
Nitrogen gas react with hydrogen gas to form ammonia, if 14.01 g sample of N2 react with 4.07g of H2, how many of ammonia is formed?
Calculate the value of deta S when 1.85 mol CH3OH (l) of is vaporized at 64.7 C. The normal boiling point of methanol is 64.7 C, and its molar enthalpy of vaporization is delta H = 71.8 KJ/mol.
chlorine gas reacts with silica SiO2, and carbon to give silicon tetrachloride and carbon monoxide. How much CO gas can be produced from 15.0g of silica?
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result in its freezing point being recorded as too high, too low, or unaffected?
What mass of Fe will form when 63.0g of CO reacts with 145g of Fe2O3 according to the following equation? 3CO+Fe2O3->2Fe+3CO2. Which is the limiting reactant?
A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition o
Calculate the molar concentration of uncomplexed Zn2+ in a solution that contains 0.20 mole of Zn(NH3)42+ per liter and 0.0116 M NH3 at equilibrium?
The charges of Hydrogens are +0.5e and Oxygen is -1.0e, where e = proton charge. Hint: you will have to use your trig to figure out the Cartesian locations of the atoms, and then use vector addition
An equilibrium mixture of so2 o2 and so3 gases at 1500k is determined to consist of 0.244 mol/L SO2, 0.172 mol/L and 0.56 mol/L SO3. What is the equilibrium constant for the system at this temperatu
What mass of glucose C6H12O6, would be required to prepare 5.000 X 10^3 L of a 0.215 M solution
Determine the average atomic mass of helium, which has two isotopes having atomic masses 4.0026 amu and 3.0160 amu. The relative abundance of the two isotopes is 99.9999 percent and 0.0001 percent, re
A gas cylinder contains 0.722 L of hydrogen gas at a pressure of 10.6 atm. If the gas is used to fill a balloon, at a pressure of 0.96 atm, what is the volume of the filled balloon?
The osmotic pressure of the solution is 3.78{atm} at 298 {K}. What is the percent by mass of glucose in the sample? What is the percent by mass of sucrose in the sample?
What is the geometric shape of ONOH and what is its' bond hybridization?
Calculate the volume of water that is released upon its complete metabolism to CO2 and water, taking into account any oxidative phosphorylation that might occur. Show reasoning!
It has one pair of electrons in its only electron orbital (or shell), 1s. Why is hydrogen more likely to form H2 than helium is to form He2?
Write the formula and name of the conjugate acid for each of the following bases:
What is the name of the product for the aldol condensation of piperonal and acetophenone?
What is the temperature of a flame from a bunsen burner that has been on for 10 to 15 min?
Using the same sample of gas ( = 275 , = 43 ), we wish to change the pressure to 2750 with no accompanying change in volume or amount of gas.
Construct a rough plot of pH versus volume of added base for the titration of 50 mL of 0.070 M HCN with 0.075 M NaOH. Ka = 4.0*10-10 for HCN