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Presume that when determining the volume of a pycnometer a student didn't notice there were air bubbles inside the pycnometer when it was filled with water. Explain what effect would this have on the determination of the pycnometer's volume? That is the presence of air bubbles in the pyccnometer will result in the calculated volume of the pycnometer being (Select one answer from below and explain your reasoning)
(a.) too high (b.) too low (c.) unaffected by the presence of air bubbles explanation of your selection.
Rank the subsequent compounds in order of decreasing surface temperature at a given temperature. CH3OH, CH3CH3, H2C=O
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
Determine the volume of SO2 (at STP) formed from the reaction of 96.7g of FeS2 and 55.0 L of O2 (at 398K and 1.20 atm). The molar mass of FeS2 is 119.99 g/mol.
Life is dependent on four major classes of biomolecules. What are they. Why are they important
Iron(III) nitrate in water solution reacts with potassium sulfide in water solution to form aqueous potassium nitrate and solid iron(III) sulfide. State a balanced chemical equation for the reaction.
100 ml sample of hard water is titrated with the ETDA solution in problem 2. the volume of EDTA required to reach the end point is 22.44 ml
Why is nitroacetic acid O2NCH2COOH pka=1.68 a much stronger acid than acetic acid CH3COOH pka=4.76
a pitcher throws a fast ball at 143 kmh toward home plate which is 18.2 m away. neglecting air resistance not a good
A gas cylinder contains a mixture of He and Ne at STP. Which of the following quantities would have the largest magnitude. Root mean square speed of He
What is the molarity of the carbonate ion in sodium carbonate, Na2CO3, prepared by dissolving 3.5 g of sodium carbonate in enough water to form 0.800 L of solution?
a an aqueous methanol ch3oh solution has a mole fraction of 0.525 of methanol. what mass of water would be present in
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations.
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