Can someone answer 2 for me please?
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Chemistry, 21.06.2019 22:20
One or more substances changing into one or more substances is an example of a
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Chemistry, 22.06.2019 08:30
In a chemical reaction at equilibrium, the rate of the forward reaction the rate of the reverse reaction. if the rate of the forward reaction more products are formed.
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Chemistry, 22.06.2019 11:40
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
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Chemistry, 22.06.2019 20:50
What is the vapor pressure of a solution with a benzene to octane?
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Chemistry, 04.06.2020 16:58
Mathematics, 04.06.2020 16:58
English, 04.06.2020 16:58
History, 04.06.2020 16:58
Mathematics, 04.06.2020 17:57
Mathematics, 04.06.2020 17:57
History, 04.06.2020 17:57
Mathematics, 04.06.2020 17:57
Mathematics, 04.06.2020 17:57
History, 04.06.2020 17:57