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Indica todos los elementos representativos de cada Grupo desde el 1A al
7A.
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How many liters of hydrogen gas will be produced at stp from the reaction of 7.179Γ10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2
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1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
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Chemistry, 22.06.2019 14:00
Displacement is the slope of a velocity vs. time graph a. true b. false
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Indica todos los elementos representativos de cada Grupo desde el 1A al
7A....
7A....
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