Chemistry, 18.10.2019 21:30 crimsonkiss
Astudent has two substances at a lab table. one substance is iron pyrite (fool's gold) and the other is real gold. after placing a 20.0-gram sample of iron pyrite into 40.0 ml of water in a graduated cylinder, it displaces 4.0 ml of water. the density of real gold is almost 4 times larger than iron pyrite. if a 20.0-gram sample of real gold is placed into the same amount of water, approximately how much water will be displaced?
Answers: 3
Chemistry, 21.06.2019 21:30
Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)
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Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.
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What forms when chemical reactions combine pollution with sunlight?
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Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds
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