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Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
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Chemistry, 23.06.2019 00:30
Fred is studying a substance that is made out of only one element. this means that
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Chemistry, 23.06.2019 01:30
Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity
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Chemistry, 23.06.2019 08:30
What percentage of energy used in the u.s is produced from fossil fuels
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A gas occupies a rigid container at a pressure of 653.6 torr with a temperature of 19.0 what is the...
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