Common Ions
Cu2+
copper(II)
Avogadro's #
6.022x1023
The substances to the left of the yield sign in a chemical equation are called what?
reactants
How many classifications/categories of chemical reactions are there
4
Balance the following equation:
Ca(s) + H20(l) ----- Ca(OH)2(aq) + H2(g)
Ca(s) + 2H20(l) ----- Ca(OH)2(aq) + H2(g)
Al3+
Aluminum
What is the sum of the atomic masses of all the atoms in a molecule?
Molecular mass
A triangle over the yield sign denotes what?
Reactants must be heated or that they produce heat
AB >> A + B
Name this type of chemical reaction.
decomposition
H2SO4(aq) + LIOH(aq) --- Li2SO4(aq) + H2O(l)
H2SO4(aq) + 2LIOH(aq) --- Li2SO4(aq) + 2H2O(l)
CO32-
carbonate
1 mole is equivalent to?
avogadro's #
6.022x1023
12g of carbon-12
"Sum of the masses of the products is always equal to the sum of the masses of the reactants."
This is known as what?
Law of conservation of mass
3 Mg(s) + N2(g) >> Mg3N2(s)
Combination
Sb2S3(s) + 02 --- Sb203(s) + SO2(g)
2Sb2S3(s) + 9O2 --- 2Sb203(s) + 6SO2(g)
Cr2O72-
dichromate
If given the empirical formula, what additional information is needed to calculate the molecular mass?
Molar mass
2C4H10(g) + 13O2(g) >> 8CO2(g) + 10H2O(g)
Is this balanced
Yes
The reactant that determines the amount of product that can be formed is...
Limiting reactant
Fe(s) + H20(g) --- Fe3O4(s) + H2(g)
3Fe(s) + 4H20(g) --- Fe3O4(s) + 4H2(g)
FE3+PO43-
Iron(III)Phosphate
What is the mass of 0.40 mol of copper atoms.
(Atomic weight of copper is 63.55)
25g
Name a leavening agent named in the book
yeast, baking soda, baking powder
Using mole ratios: how many moles of hydrogen are needed in order to produce 4 mol of ammonia
3H2(g) + N2(g) >> 2NH3(g)
6mol H2
KCLO3(s) --- KCL(s) + O2(g)
2KCLO3(s) --- 2KCL(s) + 3O2(g)