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Chapter 3 - Stoichiometry Zumdahl
This chapter is largely conceptual, so a quizlet can't help as much as trying to learn the steps and get a feel for how stoichiometry functions through practicing problems.
Terms in this set (28)
Average Atomic Mass
the sum of the masses of its isotopes, each multiplied by its natural abundance (the decimal associated with percent of atoms of that element that are of a given isotope).
An instrument used to determine the relative masses of atoms by the deflection of their ions on a magnetic field.
The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of Carbon 12. Fundamental units may be atoms, molecules, or formula units, depending on the substance concerned.
One mole of something consists of 6.022*10^23 units of that substance.
The mass in grams of one mole of a compound.
Obtained by summing the masses of the component atoms of a compound.
The percent by mass of a component of a mixture or of a given element in a compound.
a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.
The exact formula of a molecule, giving the types of atoms and the number of each type.
The reorganization of the atoms in one or more substances
A starting material in a chemical reaction
An ending material in a chemical reaction
Balancing a Chemical Equation
The principle that there must be the same number of each type of atom on both sides of the arrow in a chemical equation
The symbol designating the solid physical state in a chemical equation
The symbol designating the liquid physical state in a chemical equation
The symbol designating the gas physical state in a chemical equation
The symbol designating the aqueous solution physical state in a chemical equation
in a reaction, using exactly the correct amounts so that all reactants "run out" (are used up) at the same time.
an industrial process for producing ammonia from nitrogen and hydrogen by combining them under high pressure in the present of an iron catalyst
The reactant that is consumed first and therefore limits the amounts of products that can be formed
The maximum amount that can be produced from a given amount of the limiting reactant
The amount of product actually obtained, which is always less than the theoretical yield
Actual yield divided by theoretical yield, multiplied by 100%
Convert grams to moles
Divide by molar mass
To convert from moles of one substance to another
Use the mole ratio
To convert moles to number of molecules
Multiply by Avogadro's number
To determine volume of a gas at STP
multiply by 22.4L
the ratio between the amounts in moles of any two compounds involved in a chemical reaction
the branch of chemistry concerned with the proportions in which elements are combined in compounds and the quantitative relationships between reactants and products in chemical reactions
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