Who want to be the brainliest
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Chemistry, 22.06.2019 02:10
What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .
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Chemistry, 23.06.2019 00:00
The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?
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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
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Chemistry, 23.06.2019 19:30
Why does 4.03/0.0000035 = 1.2 x 106, instead of a different number of significant figures?
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