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What mass of KClO3 will produce 48.00 g of O2 if the decomposition of KClO3 is complete? (The answer is 122.5) Can you explain how to get to this answer?
A compound is found to be 30.45%N and 69.55% O by mass. If 1.63g of this compound occupy 389mL at 0.00 Celsius and 775 mm Hg, what is the molecular formula of the compound?
Batteries are listed by their "cranking power" which is the amount of current that the battery can produce for 30 sec, a typical values is 450 A.
How many grams of glucose are completely oxidized by 1.0 L ofoxygen gas at STP? Use PV = nRT to determine the number of moles ofoxygen.
Which is present in all living tissue, radio actively decays via a first order process. A one-gram sample of wood taken from a living tissue gives a rate of carbon-14 decay of 13.6 counts per min.
What does this suggest about the relative strengths as ligands ofnitrate ions and water molecules with Ni(II) ions? And sulfate ionsand water molecule with Cu(II) ions?
Element X crystallizes in a body-centered cubic lattice. It satomic mass is 59 amu. The edge length of a unit cell of X is0.28A. Calculate the radius of an X atom and the density of X ing/cm3.Explai
A research technician is asked to prepare 120ml of a 2.5% aqueoussolution of a drug from a stock solution. The stock solution contains 60g per L of the drug.
The current vs. time graph for a particular electrochemical reaction (run at 25°C) shows that the current drops off to ¼ its initial value after 60 minutes.
If a pair ofstudents started with 0.12 mL of acetophenone, 0.151 g of piperonaldehyde, and 0.80 mL of ethanol, and added 0.10 mL of NaHO solution (0.60 g/mL), what is the theoretical yield of the re
he crossed aldol condensation of acetalaldehyde with benzaledye isaided by the fact that bezaldehyde bears no alpha protons. However,a possible comeptitive reaction is the "self condesnation" of two
Calculate the amount of heat absorbed when 50g of ice areheated to produce steam at 100 degrees celsuis. The specific heat capacity of water is 4.18 kj /kg K. The latent heat of fusion ofice is 334
If .740 mol of a novolatile nonelectrolyte are dissolved in 3.80mol of water, what is the vapor pressure P(H20) of the resulting solution? The vapor pressure of pure water is 23.8torr at 25 degrees ce
Calculate the free energy change, ?G for the formation of ethylene(C2H4) from carbon and hydrogen at 25°C when the partial pressures are 10 atm H2 and 2.0Atm C2H4 then tell whether the reaction
The reaction N2(g)+ 3H2(g) <-->2NH3(g) is at equilibrium in areaction chamber. If an experimenter injects a small amount of N2into the chamber, what happens to the forward reaction rate at th
Explain what happens to pressure on the molecular level when the number of moles of gas is increased at constant volume. What happens to the number of collisions with the side of the container?
How much ice (in grams) would have to melt to lower the temperature of 353 mL of water from 26 degrees C to 6 degrees C? (assume the density of water is 1.0 g/mL.)
Your friend gives you a bottle that contains eitherhydrochloric, sulfuric or phosphoric acid. She also tells you the concentration of the acid in the bottle is0.2312 M.
What is the bond order of CV+ and CVOH for the reaction between CV+ and OH-, since CV+ is lewis acid andOH- is lewis base, why is LUMO is in involved with lewis acid and HOMO with lewis base.
A student prepared a buffer by adding 65 grams of sodium acetate and 50 mLs of 6M acetic acid to beaker and then adding enough water to raise the volume of the solution to 1L.
In lab, you titrate a standard solution of sodium hydroxide with an unknown solution of acetic acid. You make the standard bydissolving 25.0 g of solid sodium hydroxide in 500.0 ml ofsolution.
A current of 5.0 amps was maintained for 5.0 minutes through a solution containing excess Cu. How much Cu is plated out on the cathode?
A saturated solution of CaF2 was found to have a F^- concentration of 6.7 x 10^-4M at 25°C. What is the Ksp and what is the solubility of salt.
The vapor pressure of pure cyclohexane is 32.0 torr at its freezing point of 5.5 degrees Celsius. Calculate the vapor pressure of the solution using #1 at this temperature.
Use a sketch to show the change that occurs as a sulfur atom becomes a sulfide ion. Describe how the distance from the nucleus to the valence electrons changes as the sulfide ion forms and tell why