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What is the percent composition by mass of nitrogen in the compound N2H4 (gram-formula mass = 32 g/mol)?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
Which ion in the ground state has the same electron configuration as an atom of neon in the ground state?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
Which particle model diagram represents xenon at STP?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
Which elements are present in the mixture?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
Which compound has the strongest intermolecular forces?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
Which electron confi guration represents an atom of chlorine in an excited state?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
How many moles of carbon dioxide are produced when 5.0 moles of butane react completely?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
As the elements in Period 2 of the Periodic Table are considered in order from left to right, which property generally decreases?
20. mol
1
G and L
O^2-
HF
88%
2-7-8
atomic radius
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