QUIZ FOR (( calculations with chemical formulas and equations ))
Faculty of Engineering, Zagazig University
BY
N3,Mn,5O
K2,Mn,O4
Mn3,K,O7
O10,Mn,5K
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Mg3N2 + 6H2O --> 3Mg(OH)2 + 2NH3
Mg3N2 + 6H2O --> 3Mg(OH)2 + NH3
Mg3N2 + 2H2O --> Mg(OH)2 + NH3
Mg3N2 + 3H2O --> 3Mg(OH)2 + 2NH3
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16 grams
32 grams
48 grams
64 grams
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C3H6O3
C4H26O
C4H10O2
C5H14O
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SO
SO2
SO4
SO3
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NaPO2
Na2PO3
Na3PO4
NaPO4
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the actual number of atoms of each element in one molecule of a substance.
the elements that make up one molecule of the substance and the simplest whole number ratio between the atoms.
the number of molecules in a sample of the substance.
the molecular mass of the substance.
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14.0 g
17.9 g
23.9 g
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6
2
4
8
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10 mol
25 mol
17 mol
20 mol
35 mol
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100%
92%
69%
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40
20
12
60
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