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What is the approximate mass of an atom that contains 26 protons, 26 electrons and 19 neutrons?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
Which elements are present in this mixture?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
Based on this table, which statement describes how two of these elements can be differentiated from each other?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
What is the number of moles of C that must completely react to produce 2.0 moles of C2H6?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
Which particle diagram represents a mixture?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
Which electron configuration represents a potassium atom in an excited state?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
What is the total number of neutrons in an atom of K-42?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
Which ion has a charge of 2-?
4.0 mol
23
45 u
A
2-8-7-2
Sodium can be differentiated from iodine based on malleability.
X and A
3
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