Chemistry, 21.03.2022 21:40 live4dramaoy0yf9
How many famous rubies are in fact spindles, which look like rubies but are far less valuable. Spindles consist primarily of MGAL204, whereas Rubys are primarily AL203. If the Timmer Ruby, a 361 carat spinner, were pure MGAL204 how many moles of MGAL204 what it contain? There are exactly 5 carats per gram
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Chemistry, 22.06.2019 05:00
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 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
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Chemistry, 22.06.2019 16:30
How many grams of mgbr2 are needed to produce 75g or metal?
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How many famous rubies are in fact spindles, which look like rubies but are far less valuable. Spind...
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