Chemistry, 18.10.2019 23:30 makaylahunt
The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)βh2(g)+zn2+(aq) .
when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 βc is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 βc .)
what mass of hydrogen gas is collected?
Answers: 2
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The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed...
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