Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
An aqueous solution with an added unknown compound has a boiling point of 106 C. Glucose was added to the solution and the boiling point was reduced to 102 C. Calculate the Van't Hoff Factor of the
One mole of N2 and three moles of H2 are placed in a flask at 375 C. Calculate the total pressure of the system at equilibrium if the mole fraction of NH3 is 0.21. The Kp for the reaction is 4.31*1
Two 20.0 mL samples, one 0.200 M KOH and the other 0.200 M CH3NH2, were titrated with 0.100 M HI. What is the volume of added acid at the equivalence point for each titration?
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively.
A car has an efficiency of 15 miles per gallon of gasoline where molecular formula of the gasoline is c8H18 and the heat released during combustion of the gasoline is -249.9KJ/mole. weight of one ga
An aqueous solution is 36% by mass silver nitrate, AgNO3, and has a density of 1.41 g/mL. What is the molality of silver nitrate in the solution?
In an air-conditioned room at 19.0 C, a spherical balloon had the diameter of 50.0 cm. When taken outside on a hot summer day, the balloon expanded to 51.0 cm in diameter. What was the temperature
7.321 mg of an organic compound containing carbon, hydrogen, and oxygen was analyzed by combustion. The amount of carbon dioxide produced was 0.2503 g and the amount of water produced was 0.1025 g.
An alpha particle (mass = 6.6 x 10-24 g) emitted by radium travels at 5.0 x 107 +- 0.5 x 107 mi/hr.What is the de Broglie wavelength in meters?
Nitrogen and oxygen from an extensive series of oxides with the general formula NxOy. What is the empirical formula for an oxide that contains 46.68 % nitrogen ?
An element consists of two isotopes. The abunance of one isotope is 60.1% and its atomic mass is 68.9256 u. The atomic mass of the second isotope 70.9247 u. What is the average atomic mass of the e
If the emission lines in a particular series of the hydrogen atom were studied (for example, the lines int he Balmer series), what type of graph would be obtained from a plot of 1/lambda as a funct
1.22 In 1994, the United States produced 89.20 billion pounds of sulfuric acid. The density of this sulfuric acid was 1.84 g/mL. (a) Determine the cubic millimeters of sulfuric acid produced.
If the ground state electron configuration of an element is [Ar]3d^10 4s^2 4p^4, what is the typical charge on the monatomic anion of the element ?
The percentage of silver impurity in a lead sample was determined by the following procedure: A sample of lead weighing 1.050 g was dissolved in nitric acid to produce an aqueous solution of Pb2+ an
If the benzophenone used to prepare triphenylmethanol(from a reaction of benzophenone and phenylmagnesium bromide) is wet, what by product is formed?
A sample of Cl2 gas at a pressure of 645 mmHg is transferred to a new container having a volume one-third of the original container. What pressure, in millimeters of mercury, does the Cl2 exert in t
A peice of iron (mass=25.0 g) at 398 K is placed in a styrofoam coffee cup containing 25.0 mL of water at 298 K. Assuming that no heat is lost to the cup or the surroundings, what will the final tem
The reaction of 0.779 g K with O<SUB>2</SUB> forms 1.417 g potassium superoxide, a substance used in self-contained breathing devices. Determine the formula for potassium superoxide.
A student doing an experiment was taking temperature, volume readings for determining ?Hvap. When the temperature of the water bath was 99 degrees C, the volumein the syringe was only 15mL.
The reaction 2A+3B=C is first order with respect to A and B. When the initial concentrations are A=1.6X10^-2 M and B= 2.4X10^-3 M. The rate is 4.1 X10^-4 M/s. Calculate the rate constant of the rea
Combustion of 1.96g of a compound containing only hydrogen and carbon produced 6.35g of CO2 and 2.25g of H2O. The molecular weight of the unknown hydrocarbon was determined by mass spectroscopy to b
This is a homework/discussion question. What are some particular details of how a nuclear power plant works as it relates to chemistry?
An insulated container is used to hold 47.10 g of water at 26.10C. A sample of copper weighing 13.30g is placed in a dry test tube and heated for 30 minutes in a boiling water bath 100.10C'.
A 1.00 L vessel at O C contains 0.19 mol H2, and 1.9 mol CH4. Calculate the pressure of gas mixtureand the partial pressure of each constituent gas in the mixture.