Chemistry, 05.02.2020 00:01 hayesvolcano
Although expensive, platinum is used as a catalyst to break down harmful gasses in car exhaust into less harmful gasses. which statement best describes platinum in this use?
Answers: 1
Chemistry, 21.06.2019 21:50
H2so4(aq) + mg(s)β> mgso4(aq) +h2(g) which substance is the acid in the reaction?
Answers: 3
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
Answers: 3
Chemistry, 22.06.2019 13:50
Read the chemical equation. 2c2h2 + 5o2 β 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
Answers: 3
Although expensive, platinum is used as a catalyst to break down harmful gasses in car exhaust into...
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