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Question- Calculate the volume of air that a person exhales in an 16-hour period. Assume that each breath has a volume of about 1 L and the person exhales 15 times a minute
State your respond by means of significant figures.
The following half-reactions occur in the mercury battery used in calculators. If E°cell = 1.357 V, calculate the equilibrium constant for the cell reaction at 25°C.
If you have a sodium salt of stearic acid and neutralize it with acid, the solubility changes. Explain those relative solubility differences of these two chemical species in a solvent like hexane.
How many mL of 0.450 M NaOH are needed to titrate 25.0 mL solution of 0.250 M FeCl3 solution? FeCl3 aq + 3NaOH arrow to Fe(OH)3 aq +3NaCl aq
Hard water often contains dissolved Ca2+ and Mg2+ ions. One way to soften water is to add phosphates. The phosphate ion forms insoluble precipitates with calcium and magnesium ions
1.56 g of a gas dissolves in 2.00 L of water at a pressure of 1.75 atm. At what pressure will 2.00 g of the gas dissolve in 2.00 L of water if the temperature remains constant?
Volume of added base required to reach the equivalence point? State the pH at one half of the equivalence point
TiCl4(l)+2H2O(l)=TiO2(s)+-4HCl(g), If you begin with 14.0 mL of TiCl4 (d=1.73mL), what mass of water, in grams, is required for complete reaction
A student has three gas samples of the same volume. All the gases are at the standard temperature and pressure (273 K and 1.0 atm). If the three gases are O2, CO2, NH3, which sample contains the largest number of atoms
If a mixture of 41.25 g of aluminum and 58.83 g of oxygen reacts, what mass of aluminum oxide can be formed?
has a standard free-energy change of -4.00 kJ/mol at 25 °C. What are the concentrations of A, B, and C at equilibrium if, at the beginning of the reaction, their concentrations are 0.30 M, 0.40 M, and 0 M, respectively
A 2.00 gram sample containing Fe requires 32.0 mL of a 0.1 N Permanganate solution to be used in a red-ox titration, what is the percentage of Fe in the sample?
Electron Donor and Receptor in Metal Complexes, In the first step of the catalytic cycle, the alkene bonds to palladium to make a new metal complex The alkene is now a ligand because the pi-bond of the alkene is donating some of its electrons to p..
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