Chemistry, 23.04.2020 21:14 coolquezzie
A company is testing drinking water and wants to ensure that ca content is below 155 ppm. What is the maximum amount of Ca that would be allowed in a 890 g of water.
Answers: 3
Chemistry, 22.06.2019 00:00
Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances
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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 09:20
Explain that newton first law,second law and third law of motion?
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A company is testing drinking water and wants to ensure that ca content is below 155 ppm. What is th...
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