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Building Skills 3 pp. 30-31 Practice Problems. For each formula, name the elements present and give the number of atoms of each element. BaF 2. ANSWER!. Barium (Ba): 1 Fluorine (F): 2. For the following equation give an atom inventory: N 2 + 3 H 2 2NH 3. Reactants N-2 H-6 - PowerPoint PPT Presentation
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Building Skills 3 pp. 30-31 Practice
Problems
For each formula, name the elements present and give the number of atoms
of each element.
BaF2
ANSWER!
•Barium (Ba): 1•Fluorine (F): 2
For the following equation give an atom inventory:
N2 + 3 H2 2NH3
Reactants N-2 H-6
ProductsN-2 H-6
For each formula, name the elements present and give
the number of atoms of each element.
H2O2
•Hydrogen (H): 2•Oxygen (O): 2
For the following equation give a molecule
inventory:
N2 + 3H2 2NH3
One nitrogen molecule & three molecules of hydrogen yields two molecules of ammonia (NH3).
For the following equation give an atom
inventory:
O2 + 2H2 2 H2O
Reactants
O-2 H-4
Products
O-2 H-4
For each formula, name the elements present and give the number of atoms
of each element.
CaSO4
- Calcium (Ca): 1- Sulfur (S): 1- Oxygen (O): 4
What are subscripts?
The lower case numbers in a formula (the
number 2 in H20)
For each formula, name the elements present and give
the number of atoms of each element.
Al2SO4
-Aluminum (Al):2-Sulfur (S):1Oxygen (O):4
For the following equation list the
reactants:
O2 + 2 H2 2 H2O
O2
&
H2
For each formula, name the elements present and give
the number of atoms of each element.
NH4NO3
•Nitrogen (N):2•Hydrogen (H):4•Oxygen (O):3
What is a coefficent?
The large number out in front of a formula (like 2 in front of the 2 H2O).
For each formula, name the elements
present and give the number of atoms of
each element.
Li2CO3
-Lithium (Li): 2-Carbon (C): 1-Oxygen (O): 3
For the following equation give a molecule inventory:
CH4 +4O2 CO2+ 2H2O
One methane (CH4) and four oxygen molecules yield one carbon dioxide and two water molecules.
For each formula, name the elements present and give
the number of atoms of each element.
(NH4)3PO3
-Nitrogen (N): 3-Hydrogen (H): 12-Phosphorus (P): 1-Oxygen (O): 3
List the reactants in the following equation:
N2 + 3 H2 2 NH3
N2
& H2
4NH3+ 7O2 4NO2 + 6H2OCopy this equation.
1. Underline the coefficients.2. Circle the molecules.
Coefficients:4NH3+ 7O24NO2 +6H2O
Molecules:
NH3 NO2
O2 H20
For each formula, name the elements
present and give the number of atoms of
each element.
HC2H3O2
-Hydrogen (H): 4-Carbon (C): 2-Oxygen (O): 2
List the products in the following equation:
CH4 + 4O2 CO2 + H2O
For each formula, name the elements present and give
the number of atoms of each element.
Na2O
ANSWER!
•Sodium (Na): 2•Oxygen (O): 1
For each formula, name the elements present and give
the number of atoms of each element.
Al2O3
ANSWER!
•Aluminum (Al): 2•Oxygen (O): 3