Nomenclature Vocabulary
This type of formula indicates the actual number of atoms of each kind in a chemical compound
What is chemical or molecular formula formula?
This method can be used to determine the subscripts of ions in formulas of ionic compounds
What is the crisscross method or net zero method?
This is the definition of molar mass
What is the mass of one mole of a pure substance, written in g/mol which equals the atomic mass of an element?
Use this rule when adding or subtracting measured values in order to produce the correct number of significant figures
What is count the places after the decimal of all measured values and round the final answer to the least of these numbers?
This is used to compare quantities of two different substances in a balanced chemical equation
What is a mole ratio?
This is the number of electrons that must be added or removed from an atom when it forms an ion for ionic bonding
Oxidation number
This is the formula for the ionic compound with hypothetical ions: G4+ and Z5-?
What is G5Z4?
In the synthesis reaction between H2 and O2, this is the number of moles of water created
What is 2?
For the following balanced equation:
3H2+N2 ---> 2NH3
If 3 moles of N2 reacted with 6 moles of H2, H2 would be considered this type of reactant
What is a limiting reactant?
This is the coefficient of the solid in the balanced precipitation reaction between:
CaCl2(aq) + AgNO3(aq) -->
(Hint: the solid formed contains silver)
What is 2?
This can be determined using the following data:
An unknown substance is determined to be 27.3% by mass C and 72.7% by mass O (made up %s) thus making 2.27 mol C and 4.54 mol O.
What is an empirical formula?
These are the symbol and oxidation number of calcium
What is Ca, 2+?
This is molar mass of potassium chromate, K2CrO4
K: 39.1 g/mol
Cr: 52.0 g/mol
O: 16.0 g/mol
What is 194.2 g/mol?
This is the number of moles of NaBr formed when 0.69 mol Br2 reacts with excess NaI:
Br2 + 2NaI --> 2NaBr + I2
What is 0.34 moles?
This number of molecules of water are formed when 2.0g H2 react with excess oxygen to form water vapor
What is 6.0x1023?
This symbolism, Be2+ , is an example of
What is a monoatomic ion?
This is the compound name for Fe2(CO3)3
What is iron (III) carbonate?
This is the mass percent of carbon in CO
C: 12.01 g/mol
O: 16.0 g/mol
What is 42.9%
This is the mass percent of both elements in CaO
Ca: 40.08 g/mol
O: 16.0 g/mol
What is Ca = 71.4% O = 28.5%?
This is the mass of NO2 formed when 5.0L N2O4 decomposes completely at STP
N2O4(g) <--> 2NO2(g)
NO2:
What is 20.5g?
This symbolism, NH4+1 can be described as an example of this
What is a polyatomic ion?
This is the chemical formula and the compound name for Al3+ and N3-
What is AlN and aluminum nitride?
This is the empirical formula of a compound containing 4.6g Na, 3.21g S and 6.4g O.
Na: 23.0 g/mol
S: 32.06 g/mol
O: 16.0 g/mol
What is Na2SO4?
This is the percent yield when 21.75 g CO2 are produced in the combustion of 25.0g methane and 50.0 g oxygen gas
CO2: 44.01 g/mol
methane: 16.04 g/mol
oxygen gas: 32.0 g/mol
What is 63.3%?
This is the mass of SO2 formed when 31.5g S8 reacts with 8.65g O2
S: 32.06 g/mol
O: 16.0 g/mol
What is 17.3g SO2?