Chemistry, 29.08.2020 23:01 arlabbe0606
Does a reaction occur when aqueous solutions of chromium(III) chloride and silver(I) nitrate are combined
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Chemistry, 21.06.2019 13:30
What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filling it from the bottom up?
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Chemistry, 22.06.2019 10:20
In a reaction equation, where are the products located? a.) above the arrow b.) to the right of the arrow c.) to the left of the arrow d.) below the arrow
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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) β h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 Β°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 14:00
How is the atomic number of a nucleus changed by alpha decay
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Does a reaction occur when aqueous solutions of chromium(III) chloride and silver(I) nitrate are com...
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