Based on Chromium's position on the periodic table, which statement describes the element
chromium (Cr), atomic number 24?
A. chromium is a nonmetal and therefore a good conductor of heat and electricity
B. chromium is a metal that is more reactive than potassium
C. chromium is a metal that is less reactive than sodium
D. chromium is a noble gas that is not reactive
Answers: 3
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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
Based on Chromium's position on the periodic table, which statement describes the element
chromium...
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