Chemistry, 18.03.2021 02:20 fatimababy
CO2 (g) + H20 (1) ► C&H 206 (s) + 0(g) H Н 000+ H Н. H ото C H
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Chemistry, 22.06.2019 06:30
What effect might melting sea ice have for people who live in coastal areas?
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What is the percentage composition of carbon in the compound ch4
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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.)
Answers: 1
Chemistry, 22.06.2019 14:00
What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
Answers: 2
CO2 (g) + H20 (1) ► C&H 206 (s) + 0(g) H Н 000+ H Н. H ото C H...
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