Chem chapter 7
Find the oxidation for magnesium in MgO
+2
Find the oxidation for silicon in SiCl4
+4
Find the oxidation for sulfur in H2SO4
+6
Find the oxidation for oxygen in peroxides
-1
What is the formula mass of copper (II) chloride, CuCl2?
134.45 u
What is the molar mass of tetraethyl lead, Pb(C2H5)4?
323.48 g/mol
What is the mass of 0.240 mol glucose, C6H12O6?
43.2 g
Write the formula and give the name of the compound: Al^3+ and SO4^2-
Al2(SO4)3, aluminum sulfate
Write the formulas for the following compound: Barium hydroxide
Ba(OH)2
A sample of a compound is 80% carbon and 20% hydrogen by mass. Its formula mass is 30 u. What is its molecular formula?
C2H6
The empirical formula for a compound is C2H5 and its formula mass is 58 u. What is its molecular formula?
C4H10
Oxidation number: CO3^2-
C:+4 O:-2
What is the empirical formula for a sample of a compound that contains 259.2 g F and 40.8 g C?
CF4
Write the formulas for the following compound: Carbon tetriodide
CI4
Write the formula and charge: carbonate ion
CO3^2-
Write the formula and give the name of the compound: Ca^2+ and Cl-
CaCl2, calcium chloride
Write the formula and charge: copper (I) ion
Cu+
What is the percentage composition of CuCl2 by mass?
Cu:47.27% Cl:26.37%
The formula for phosphoric acid is...
H3PO4
Oxidation number: H2O2
H:+1 O:-1
Oxidation number: NH4^+
N:-3 H:+1
Write the formula and give the name of the compound: Pb^2+ and CrO4^2-
PbCrO4, lead (II) chromate
Write the formula and charge: sulfide ion
S^2-
Write the formulas for the following compound: Silicon dioxide
SiO2
Write the formulas for the following compound: Tin (IV) chromate
Sn(CrO4)2
Write the name for the following compound using prefixes: CO
carbon monoxide
Write the name for the following compound using prefixes: CCl4
carbon tetrachloride
The first part of the name of a binary ionic compound is the...
cation
Changing a subscript in a correctly written chemical formula will......
change the formula so that it no longer represents the same compound
Using the stock system of nomenclature, Cr2(SO4)3 is named...
chromium (III) sulfate
Write the name for the following compound using the stock system: CuCO3
copper (II) carbonate
Name the following ion: CN-
cyanide ion
Write the name for the following compound using prefixes: N2O4
dinitrogen tetroxide
To determine the correct molecular formula of a compound from an empirical formula, one must determine the...
formula mass
Name the following ion: OH-
hydroxide ion
Write the name for the following compound using the stock system: Fe(NO2)2
iron (II) nitrite
The empirical formula may not represent the actual composition of a...
molecular compound
Name the following ion: O^2-
oxide ion
Write the name for the following compound using the stock system: PI3
phosphorus (III) iodide
Write the formula and give the name of the compound: Sn^4+ and PO4^3-
sN3(PO4)4, tin (IV) phosphate
In a polyatomic ion, the algebraic sun of the oxidation numbers of all atoms is equal to...
the charge of the ion
