The Mole
Molar Mass
Potpourri
Percentage Composition
100
This is Avogadro's number of any element.
What is 6.022 x 10 to the 23 power?
100
This is the unit for molar mass.
What is g/mol (grams per mole)?
100
The molar mass of an element is numerically equal to the element's ________ mass.
What is "atomic"?
100
You need these two pieces of information to start determining the percentage composition of CF(4).
What are the molar masses of carbon (12.0 g/mol) and fluorine (19.0 g/mol)?
200
This is the way that 1 mole of silver (Ag) and 1 mole of gold (Au) are alike.
What is they have the same number of moles?
200
The molar mass of an element is the mass of one ____ of that element.
What is "mole"?
200
The atomic mass of nitrogen is 14.00674 amu. This is the reason that this value is not a whole number.
What is "nitrogen has more than 1 isotope" (or) "all the isotopes of nitrogen are averaged together to get that number"?
200
This is the empirical for isooctane, whose molecular formula is C(8)H(18).
What is C(4)H(9)?
300
These two mathematical operations can be used to convert particles to moles.
What are multiplication and/or division?
300
This is the mass (to the nearest tenth) of one mole of lithium.
What is 6.9 grams?
300
Each isotope of an element have a different number of these.
What are neutrons?
300
These are the names of the elements you must look up to find the composition for silver acetate: AgC(2)H(3)O(2)
What are silver, carbon, hydrogen, and oxygen?
400
Particles is a general term in chemistry that can mean these more specific things (name at least 2).
What are (atoms / ions / molecules / formula units)?
400
Most elements are mixtures of different ___________ of the the same element.
What are isotopes?
400
These are multiple atoms that are grouped together with a single overall charge (positive or negative).
What is a polyatomic ion?
500
This is why only carbon-12 is used as a basis for defining a mole.
What is "because ordinary carbon may have other isotopes within it that have differing masses"?
500
This is the number of moles of nitrogen atoms present in one mole of NH(4)NO(3)
What is 2?
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