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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?
Calculate the pH at the equivalence point in titrating 0.110 M solutions of each of the following with 7.0×10-2 M NaOH.
On the basis of Oxidation number considerations, one of the following oxides would not react with molecular oxygen: NO, N2O, SO2, SO3, P4O6. Which one is it. And why
Describe a situation where a substance changed between the solid and liquid states or between liquid and gas states? Can you describe an example of when a substance changed between the gas and solid states? Let's see how many different examples we..
Explain how the carbonate system in natural waters provides buffering capacity
a 28.2 g sample of nickel metal is heated to 99.8 degrees celsiusand place in a coffee-cup calorimeter containing 150.0
What is the pH of this buffer? pH = (b) What is the pH of the buffer after the addition of 0.56 mol of NaOH? (assume no volume change) pH = (c) What is the pH of the original buffer after the addition of 0.30 mol of HI? (assume no volume change) p..
what mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60 yield.
The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol.C)
The crude copper that is subjected to electrorefining contains tellurium as an impurity. The standard reduction potential between tellurium and its lowest common oxidation state, Te^4+, is Te^4+(aq)+4e-=> Te(s) E°red= 0.57V
Predict the probability P9v) that a molecule will have a given total velocity of more specifically P(v)dv is the probability that a molecule will have a velocity btwn v and v+dv.
A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. the combustion of 88.5 mg produced 241 mg of CO2 and 49.2 mg of H2O. the molar mass of the compound was 162 g/mol.
A 0.464 g sample of a compound containing the elements carbon, hydrogen, oxygen, and sulphur was burned completely, yielding 0.969 g CO2 and 0.198 g H2O. In a separate experiment, all the sulphur in another 0.464 g sample was converted to 0.859 g ..
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