12 Questions
Stoichiometry deals with the quality of substances, not the quantities.
False
An empirical formula provides the exact number of atoms in a molecule.
False
The molecular formula C2H5OH represents dimethyl ether.
False
Atoms are extremely large in size, making them visible to the naked eye.
False
Stoichiometry involves predicting reactant quantities, but not interpreting chemical analysis results.
False
The atomic weight scale is established based on the mass of the lightest element.
True
The formula weight of MgCl2 is 95.21 amu.
True
The percent composition of Mg in Mg(NO3)2 is 20.39%.
False
The number of moles of Hydrogen gas in 27g of Hydrogen is 13.4 moles.
True
The number of Carbon atoms in 0.0022 gram of CO2 is 5.01x10^19.
False
The empirical formula of a compound with 60% Oxygen and 40% Sulfur by mass is SO3.
True
In the given stoichiometric equation, 2 moles of aqueous sodium iodide react with 1 mole of aqueous lead nitrate to produce 2 moles of solid lead iodide.
False
Learn about the quantitative relationship among chemical species, conservation of mass, relative masses of moles, and the concept of mole in stoichiometry. This quiz provides a brief review and practical applications of stoichiometry in chemical calculations.
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