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If you place a 24.5 g piece of ice at -28.2 °C into a calorimeter with 91.6 mL of water at 64.6 °C, what is the final temperature at thermal equilibrium in degrees Celsius?
(Assume the density of aqueous solutions is 1.00 g/mL. Do not enter units in the answer, only numerical values will be accepted.)
Calculate the solubility (in grams per 1.00x10^2 mL of solution) of magnesium hydroxide in a solution buffered at pH=12 and how does this compare to Mg(OH)2 in pure water (S1/S)
Consider the following chemical equation. H2(g) + I2(g) ? HI(g) Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 725 mL of H2
Problem- A drinking water has a calcium concentration of 17 ppm. What is the pH of this lake. It may or may not help to remember that the atomic weight of calcium is 40.1 g/mol.
Ethanol has a molar mass of 46.08g/mol and a density of 0.789g/mL. It is a clear, colorless liquid that dissolves readily in water. How many milliliters of ethanol would be needed to make 1.20L of a 2.75M solution?
The Heisenberg uncertainty principle also holds for energy and time, two complimentary variables. How well can we know the energy of molecular excited states with lifetimes of a)10 micro seconds; b) 10 ns and c) 10 ps.
A voltaic cell is constructed from an Ni^2+(aq)-Ni(s) half-cell and an Ag^+(aq)-Ag(s) half-cell. The initial concentration of Ni^2+(aq) in the Ni^2+-Ni half cell is [Ni^2+] = 1.1*10^-2M.
determine the density in gml of a 0.70 g sample of oxygen gas that occupies 5.0l. compare the density of oxygen gas to
The solubility product of PbBr2 is 8.9*10^-6. Determine the molar solubility in 2M KBr solution
ferrocene fec5h52s can be prepared by reacting 3.0 g of fecl2s with an equal mass of cyclopentadiene c5h6l and an
Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide. Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment.
what metal cations form sulfide precipitates in basic solution in qual scheme after the above cations have been removed. Qualitativley explain, why the pH of the sulifide solution effects which cations precipitate.
If iron is ready by passing carbon monoxide gas through molten iron ore ferric oxide in a blast furnace at 1500 degree C and assuming the only products are molten iron and carbon dioxide, State a balanced chemical equation for this change showing ..
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