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A sample of methane, CH4, occupies 4.50 L at STP. How many moles of methane are
present?
Date posted:
April 8, 2019
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How many O2 molecules are present in 0.470 g of oxygen gas?
Date posted:
April 8, 2019
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How many sulfur atoms are in 1.56 g sulfur?
Date posted:
April 8, 2019
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Give the complete mechanism for each of the following reaction. Use curly arrows
to show movement of electrons.
Date posted:
March 18, 2019
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Starting with the compound on the left, outline the synthesis of the compound on the
right. Show the structures of all reagents/intermediates in each synthesis
Date posted:
March 18, 2019
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Given the reagents 1-bromoethane, magnesium, diethylether and ethyl acetate, show
the steps in the synthesis of 3-methyl-3-pentanol
Date posted:
March 18, 2019
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Explain the contrast of water miscibility of alcohols with increase in the carbon chain.
Date posted:
March 18, 2019
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Why do alcohols have much higher boiling points than hydrocarbons of comparable molecular weight?
Date posted:
March 18, 2019
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In an experiment, 54.20 grams of phosphorus tribromide (PBr3) was reacted
with an excess of 2-methylpropanol (CH3CH(CH3)CH2OH). The reaction yielded 57.96 grams of 1-Bromo-2-methylpropane (CH3CH(CH3)CH2Br) and phosphoric acid (H3PO3), Write a blanced equation and calculate the percentage yield for the alkyl bromide. [H = 1, C = 12, P = 31, Br = 80]
Date posted:
March 15, 2019