Which answer best explains how the periodic table was reorganized over time?
a. the modern p...
Chemistry, 16.09.2019 09:00 jennifer9983
Which answer best explains how the periodic table was reorganized over time?
a. the modern periodic table evolved rapidly and quickly because many elements were easily discovered.
b. more modern tables were created by scientists who were working for fame and monetary reward.
c. science continually changes and new laws, theories and models must always replace older ones.
d. the accepted version of the periodic table was replaced when investigation resulted in new knowledge.
Answers: 2
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One of the reactions in a blast furnace used to reduce iron is shown above. how many grams of fe2o3 are required to produce 15.5 g of fe if the reaction occurs in the presence of excess co? a.11.1 g b.22.1 g c.30.0 g d.44.2 g
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#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond
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Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?
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