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Questions and Answers
The formula weight of MgCl2 is 95.21 amu.
True
The percent composition of Mg in Mg(NO3)2 is 16.39%.
True
Avogadro's number is 6.02x10^23 items.
True
The no. of moles of Hydrogen gas in 27g of Hydrogen is 13.4 moles.
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The empirical formula of a compound with 60% Oxygen and 40% sulfur is SO3.
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In a stoichiometric calculation, a balanced chemical equation provides combining ratios in units of grams.
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Stoichiometry is the aspect of chemistry that deals with the quantities of substances.
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An empirical formula specifies the number of atoms in a molecule.
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A molecular formula and an empirical formula can be the same for all compounds.
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The atomic weight scale is established by choosing an element as a standard with a numerical value.
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Stoichiometry involves only predicting reactant quantities and not interpreting chemical analysis results.
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Structural formulas reveal differences between compounds that are not shown in their common molecular formulas.
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