Fill in the blank: elements in the same on the periodic table have the same number of valence electrons. properties of elements within a on a periodic table change in a predictable way from one side of the table to the other. the number of in an atom determines the identity of an element.
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Chemistry, 22.06.2019 04:00
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
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Chemistry, 22.06.2019 05:50
What happens when the temperature of a solution increases?
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Chemistry, 22.06.2019 17:00
The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?
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Chemistry, 22.06.2019 19:30
Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?
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Fill in the blank: elements in the same on the periodic table have the same number of valence elec...
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