Ch 3 Chemistry Test
ammonium sulfate
(NaH4)2SO4
the prefix deca- in a molecular formula tells you hat ___ atoms of that element are present in each molecule
10
Calculate two moles of carbon tetrafluoride (CF4).
176.02g
If the molecular mass of CO(2) is 44.01 u, what is its molar mass?
44.01 g
How many atoms are in exactly one mole of carbon-12?
6.022 x 10^23
the prefix hepta- in a molecular formula tells you that ___ atoms of that element are present in each molecule
7
The prefix octa- in a molecular formula tells you that ____ atoms of that element are present in each molecule.
8
the prefix nona- in a molecular formula tells you that ___ atoms of that element are present in each molecule
9
silver acetate
AgC2H3O2
Aluminum
Al
aluminum oxide
Al2O3
The number that allows us to convert from numbers of atoms to masses of atoms or vice versa
Avogadro's number
Give the element symbol for numbers 9-18: Carbon
C
dicarbon tetrabromide
C2Br4
carbon tetrachloride
CCl4
carbonate
CO3^2-
Calcium
Ca
calcium chlorate
Ca(ClO3)2
Write the formula for the ionic compounds (57-64): calcium carbonate
CaCO3
Chlorine
Cl
chlorate
ClO3-
Co
Cobal
Write the name for the elements for numbers 19-28: Cu
Copper
copper(I) cyanide
CuCN
Iron
Fe
iron (III)
Fe3+
F
Fluorine
Hydrogen
H
bicarbonate
HCO3-
He
Helium
iodine tricholoride
ICl3
Potassium
K
postassium carbonate
K2CO3
Pb
Lead
Hg
Mercury
dinitrogen tetroxide
N2O4
ammonium
NH4+
nitrate
NO3-
Sodium
Na
Neon
Ne
Oxygen
O
Name the correct formula for the ions on numbers 37-46: hydroxide
OH-
Write the formula for each of the following molecular compounds for numbers 47-51: phosphorus pentachloride
PCl5
phosphate
PO4^3-
lead(IV) sulfide
PbS2
sulfate
SO4^2-
silicate
SiO3^2-
Si
Silicon
Ag
Silver
U
Uranium
Zn
Zinc
CSe2
carbon diselenide
A compound consisting of a carbon atom and four fluorine atoms (CF4)
carbon tetrafluoride
Cu2SO4
copper (II) sulfate
The ionic compound CuSO4
copper sulfate
Cl2O8
dichlorine octoxide
A compound consisting of two nitrogen atoms and five oxygen atoms (N2O5)
dinitrogen pentoxide
A compound consisting of two nitrogen atoms and four oxygen atoms (N2O4)
dinitrogen tetroxide
Write the name of each molecular compound for numbers 52-56: I2O5
diodine pentoxide
Se2I2
diselenium diodine
The ionic compound Fe(2)O(3) consisting of two Fe3+ ions and three O2- ions
iron (III) oxide
FeF2
iron(II) fluoride
FePO4
iron(III) phosphate
Pb(NO3)2
lead (II) nitrate
MgBr2
magnesium bromide
Write the name for the ionic compounds for numbers 65-71: Ag2Cr2O7
silver dichromate
The ionic compound AgNO3, consisting of the Ag+ ion and the NO3- ion
silver nitrate
The ionic compound NaOH
sodium hydroxide
A compound consisting of a sulfur atom and six fluorine atoms (SF6)
sulfur hexafluoride
SnSiO3
tin (II) silicate
Br3O8
tribromide octoxide