CHEM 103: MODULE 4 ACTUAL EXAM WITH
QUESTIONS AND CORRECT VERIFIED
ANSWERS GRADED A+ || 100% GUARANTEED
PASS NEWEST VERSION
Molecular formula - Answer Representation of a molecule that uses chemical
symbols to indicate the type of atoms, followed by subscripts to show the number
of atoms of each type in the molecule
Structural formula - Answer Gives the same information as a molecular formula
but shows how atoms are connected in the molecule using lines
Empirical formula - Answer Type of atoms present and simplest whole-number
ratio of number of atoms (or ions) in the compound
Isomer - Answer Compounds with the same chemical formula but a different
molecular structure
Formula mass - Answer Sum of the average atomic masses of all atoms
represented in the substance's formula
Avogadro's number - Answer 6.022 x 10^23 atoms = 1 mole
1 u = ___ g - Answer 1.661 x 10 ^-24 g
, formula mass - Answer the sum of the average atomic masses of each atom
represented in the chemical formula and is expressed in atomic mass units.
--The formula mass of a covalent compound is also called the molecular mass.
The chemical identity of a substance is defined by - Answer the types and
relative numbers of atoms composing its fundamental entities (molecules in the
case of covalent compounds, ions in the case of ionic compounds).
A compound's percent composition provides - Answer the mass percentage of
each element in the compound.
calculate the formula mass of a substance by - Answer summing the average
atomic masses of all the atoms represented in the substance's formula.
A mole is defined as - Answer the amount of substance containing the same
number of discrete entities (such as atoms, molecules, and ions) as the number of
atoms in a sample of pure 12-C weighing exactly 12 g
percent composition - Answer the percentage by mass of each element in a
compound
i.e. mass X / mass compound x 100%
stoichiometry - Answer refers to the quantitative relationships between amounts
of reactants and products in a chemical reaction.
QUESTIONS AND CORRECT VERIFIED
ANSWERS GRADED A+ || 100% GUARANTEED
PASS NEWEST VERSION
Molecular formula - Answer Representation of a molecule that uses chemical
symbols to indicate the type of atoms, followed by subscripts to show the number
of atoms of each type in the molecule
Structural formula - Answer Gives the same information as a molecular formula
but shows how atoms are connected in the molecule using lines
Empirical formula - Answer Type of atoms present and simplest whole-number
ratio of number of atoms (or ions) in the compound
Isomer - Answer Compounds with the same chemical formula but a different
molecular structure
Formula mass - Answer Sum of the average atomic masses of all atoms
represented in the substance's formula
Avogadro's number - Answer 6.022 x 10^23 atoms = 1 mole
1 u = ___ g - Answer 1.661 x 10 ^-24 g
, formula mass - Answer the sum of the average atomic masses of each atom
represented in the chemical formula and is expressed in atomic mass units.
--The formula mass of a covalent compound is also called the molecular mass.
The chemical identity of a substance is defined by - Answer the types and
relative numbers of atoms composing its fundamental entities (molecules in the
case of covalent compounds, ions in the case of ionic compounds).
A compound's percent composition provides - Answer the mass percentage of
each element in the compound.
calculate the formula mass of a substance by - Answer summing the average
atomic masses of all the atoms represented in the substance's formula.
A mole is defined as - Answer the amount of substance containing the same
number of discrete entities (such as atoms, molecules, and ions) as the number of
atoms in a sample of pure 12-C weighing exactly 12 g
percent composition - Answer the percentage by mass of each element in a
compound
i.e. mass X / mass compound x 100%
stoichiometry - Answer refers to the quantitative relationships between amounts
of reactants and products in a chemical reaction.
