1.
Scientists before Mendeleev had observed that certain elements reacted similarly with other chemicals. Which further observation led Mendeleev to create the periodic table?
A The elements within these groups often differed
physical properties, such as color and texture
B. The atomic weights of the elements within these groups were spaced at nearly regular increments
C The reactivity of the elements within these groups varied at nearty regular increments
D. Elements that did not fit in these groups belonged in the lanthanide and actinide series
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Chemistry, 22.06.2019 06:00, palomaresmitchelle
There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit
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Chemistry, 22.06.2019 06:40, CylieTbh
Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
Answers: 3
1.
Scientists before Mendeleev had observed that certain elements reacted similarly with other chem...
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