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How many moles of carbon dioxide are produced when 5.0 moles of butane react completely?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
Which electron confi guration represents an atom of chlorine in an excited state?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
As the elements in Period 2 of the Periodic Table are considered in order from left to right, which property generally decreases?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
Which compound has the strongest intermolecular forces?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
Which elements are present in the mixture?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
What is the percent composition by mass of nitrogen in the compound N2H4 (gram-formula mass = 32 g/mol)?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
Magnesium and calcium have similar chemical properties because their atoms in the ground state have
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
A student measures the mass and volume of a sample of aluminum at room temperature, and calculates the density of Al to be 2.85 grams per cubic centimeter. Based on Table S, what is the percent error for the student’s calculated density of Al?
G and L
HF
20. mol
88%
5.6%
atomic radius
two electrons in the outermost shell
2-7-8
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