Chemistry, 22.08.2019 03:30, avanelson01
What did the scientists who founded the royal society of london share with lavoisier
Answers: 1
Chemistry, 22.06.2019 03:00, actheorian8142
Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife
Answers: 3
Chemistry, 22.06.2019 06:00, applejulianamoreno
If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?
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Chemistry, 22.06.2019 09:50, revlonknox6
Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore
Answers: 2
Chemistry, 22.06.2019 11:40, Wemaybewrong
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
What did the scientists who founded the royal society of london share with lavoisier...