Molecular Formulas. A molecule is a neutral group of atoms united by covalent bonds. A substance that is made of molecules is called a molecular substance . To describe the composition of a molecular compound , chemists often use a molecular
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A molecule is a neutral group of atoms united by
covalent bonds. A substance that is made of
molecules is called a molecular substance. To
describe the composition of a molecular
compound, chemists often use a molecular
formula. A molecular formula tells you how
many atoms are in a single molecule of the
If a molecule contains more than one atom of a
particular element, this quantity is indicated
using a subscript after the chemical symbol.
EXAMPLE: The molecular formula for glucose
(a simple type of sugar):
6 atoms of carbon 12 atoms of hydrogen 6 atoms of oxygen
1. What elements are in the following compound: Lithium acetate (LiC2H3O2)?
b. Carbonc. Hydrogen
2. How many atoms of each element are in the compound above?
Li = 1
C = 2
H = 3
O = 2
3. How many total # of atoms are in the following compound: Ammonium phosphate
N = 3
H = 12
P = 1
O = 4
4. Write the chemical formula for the following compound.
1 atom of gold and 3 atoms of chlorine
2 atoms of hydrogen, 1 atom of sulfur, and 4 atoms of oxygen
Carbon = 6
Hydrogen = 12
Oxygen = 6
Mg = 1
C = 4 15 atoms
H = 6
O = 4