Chemistry, 28.12.2019 05:31 chunkymonkey090
Explain this observation: only a small area of the day side of earth can see a solar eclipse.
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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 05:30
What is the mass of each element in a 324.8 sample of co2
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Chemistry, 22.06.2019 09:30
The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?
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Chemistry, 22.06.2019 19:30
Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth. what is the independent variable for this experiment?
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Explain this observation: only a small area of the day side of earth can see a solar eclipse....
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