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ceruleangnat413Lv1

3 Apr 2020

It is common in mass spectrometry to assume that the mass of a cation is the same as that of its parent atom. (a) Using data in Table 2.1, determine the number of significant figures that must be reported before the difference in masses of ¹H and ¹H⁺ is significant. (b) What percentage of the mass of an ¹H atom does the electron represent?

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Sixta KovacekLv2

25 May 2020

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Sodium and potassium have similar chemical and physical properties. This is best explained by the fact that both elements

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Sodium oxide reacts with water to produce sodium hydroxide. Suppose 10.2 g of sodium oxide is combined with 34.6 g of water. When the reaction is complete, all the sodium oxide has been consumed. According to the law of conservation of mass, which is a true statement?

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a) Calculate the theoretical yield of your product. The theoretical yield should be quoted as a mass, not a number of moles. Units must be shown on all numbers that need them. Calculations that are done with an incorrect number of significant figures will be counted as incorrect. Your work must be shown.

b) Calculate the percent yield for your product. This calculation should be done with masses of your product and the theoretical yield, not the number of moles. Calculations that are done with an incorrect number of significant figures will be counted as incorrect.) Your work must be shown.

c) Calculate the atom economy for the epoxidation. (Calculations that are done with an incorrect number of significant figures will be counted as incorrect). Your work must be shown. The equation is:

Carvone + HOOH ï® product + H2O (the hydroxide is catalytic).

carvone mass: .709 g

Mass of organic product: .519g

I don't think you need these numbers: mass of flask: 37.935, mass with carvone in flask: 38.644, mass of empty beaker product was placed into: 49.816, mass of organic product in beaker:50.335

Chem Help! Show work please and thank you