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An oxide ion, O2-, has the same electron configuration as an atom of which noble gas?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
Which numerical setup can be used to calculate the atomic mass of rhenium?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
Which statement describes the charge and the radius of the magnesium ion formed when a magnesium atom loses two electrons?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
One mole of bromine gas, Br2, has a mass of
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
Which type of reaction does this equation represent?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
What is the mass of KCl produced when 24.51 grams of KClO3 reacts completely to produce 9.60 grams of O2?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
Which formula represents chromium(III) oxide?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
What is the net charge of a monatomic ion that has 15 protons, 16 neutrons, and 18 electrons?
Cr2O3
(184.95 u)(0.3740) +1 (186.96 u)(0.6260)
decomposition
The Mg ion is positive and has a radius smaller than the Mg atom.
3-
14.91 g
159.8 g
neon
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