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Chemistry, 22.06.2019 07:10
Which of these conditions most likely produces an unstable isotope?
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Chemistry, 23.06.2019 13:30
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)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures
Answers: 3
Chemistry, 23.06.2019 14:30
William has eight more nickels than dimes in his pocket for a total of $2.50. which equation could be used to determine the number of x dimes in his pocket?
Answers: 1
When the equation ca(oh)2 + hbr → (products) is completed and balanced, one term in the equation wil...
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