CHEM 120 WEEK 7 ASSIGNMENT 2026 -2027
APPLICATION OF STOICHIOMETRY IN DRUG
DOSAGE CALCULATIONS COMPLETE
CHEMISTRY REPORT WITH ANSWERS
What is the relationship between moles and mass? -
ANSWER ✓Mass can be converted to moles using molar
mass, and vice versa.
What is the relationship between moles and particles? -
ANSWER ✓Moles can be converted to particles using
Avogadro’s number.
What is the relationship between moles and gas volume? -
ANSWER ✓At standard conditions, one mole of gas
occupies 22.4 liters.
What is STP in chemistry? - ANSWER ✓Standard
Temperature and Pressure, defined as 0°C and 1
atmosphere.
What is the purpose of dimensional analysis in
stoichiometry? - ANSWER ✓To ensure correct unit
conversion during calculations.
,What is a balanced chemical equation? - ANSWER ✓An
equation where the number of atoms for each element is
equal on both sides.
Why must equations be balanced before calculations? -
ANSWER ✓To follow the law of conservation of mass
and ensure accurate results.
What is stoichiometry? - ANSWER ✓The quantitative
study of substances and how reactants and products relate
in a chemical reaction.
What are the three types of representative particles? -
ANSWER ✓Atoms, molecules, and formula units.
What is the representative particle for molecular
compounds? - ANSWER ✓Molecules, made up of two or
more nonmetal elements bonded together.
What is the representative particle for ionic compounds? -
ANSWER ✓Formula units, consisting of a metal
combined with a nonmetal.
How can a balanced chemical equation be interpreted? -
ANSWER ✓By comparing the number of particles,
moles, and masses involved in the reaction.
,What does the law of conservation of mass state? -
ANSWER ✓Matter cannot be created or destroyed during
a chemical reaction.
How can we mathematically prove the conservation of
mass? - ANSWER ✓By calculating total mass using
moles and molar mass for both reactants and products and
showing they are equal.
What is molar mass? - ANSWER ✓The mass of one mole
of a substance, measured in grams per mole (g/mol).
What does stoichiometry help us determine? - ANSWER
✓The amount of product formed from given reactants and
the quantity of reactants required for a desired product.
What is a limiting reagent? - ANSWER ✓The substance
that runs out first and restricts the amount of product
formed.
What is an excess reagent? - ANSWER ✓The substance
that remains after the reaction is complete because it is
not fully consumed.
What is theoretical yield? - ANSWER ✓The highest
possible amount of product predicted from a reaction.
What is actual yield? - ANSWER ✓The real amount of
product obtained from an experiment.
, What is percent yield? - ANSWER ✓The percentage
comparing actual yield to theoretical yield.
What is the significance of percent yield in
pharmaceutical production? - ANSWER ✓It helps reduce
waste and control production costs when manufacturing
drugs.
What is the mole to mole ratio? - ANSWER ✓The ratio
between moles of substances as indicated by coefficients
in a balanced equation.
How can we determine the mole ratio from a balanced
equation? - ANSWER ✓By reading the coefficients as
mole relationships and using them as conversion factors.
What is the purpose of writing conversion factors in
stoichiometry? - ANSWER ✓To convert between
different units and quantities during calculations.
What is the role of coefficients in a balanced chemical
equation? - ANSWER ✓They show the proportional
amounts of substances needed or produced.
What is the first step in identifying the limiting reagent? -
ANSWER ✓Convert all reactant amounts into moles.
What happens when there are more or less of some
reactants present in a reaction? - ANSWER ✓It influences
APPLICATION OF STOICHIOMETRY IN DRUG
DOSAGE CALCULATIONS COMPLETE
CHEMISTRY REPORT WITH ANSWERS
What is the relationship between moles and mass? -
ANSWER ✓Mass can be converted to moles using molar
mass, and vice versa.
What is the relationship between moles and particles? -
ANSWER ✓Moles can be converted to particles using
Avogadro’s number.
What is the relationship between moles and gas volume? -
ANSWER ✓At standard conditions, one mole of gas
occupies 22.4 liters.
What is STP in chemistry? - ANSWER ✓Standard
Temperature and Pressure, defined as 0°C and 1
atmosphere.
What is the purpose of dimensional analysis in
stoichiometry? - ANSWER ✓To ensure correct unit
conversion during calculations.
,What is a balanced chemical equation? - ANSWER ✓An
equation where the number of atoms for each element is
equal on both sides.
Why must equations be balanced before calculations? -
ANSWER ✓To follow the law of conservation of mass
and ensure accurate results.
What is stoichiometry? - ANSWER ✓The quantitative
study of substances and how reactants and products relate
in a chemical reaction.
What are the three types of representative particles? -
ANSWER ✓Atoms, molecules, and formula units.
What is the representative particle for molecular
compounds? - ANSWER ✓Molecules, made up of two or
more nonmetal elements bonded together.
What is the representative particle for ionic compounds? -
ANSWER ✓Formula units, consisting of a metal
combined with a nonmetal.
How can a balanced chemical equation be interpreted? -
ANSWER ✓By comparing the number of particles,
moles, and masses involved in the reaction.
,What does the law of conservation of mass state? -
ANSWER ✓Matter cannot be created or destroyed during
a chemical reaction.
How can we mathematically prove the conservation of
mass? - ANSWER ✓By calculating total mass using
moles and molar mass for both reactants and products and
showing they are equal.
What is molar mass? - ANSWER ✓The mass of one mole
of a substance, measured in grams per mole (g/mol).
What does stoichiometry help us determine? - ANSWER
✓The amount of product formed from given reactants and
the quantity of reactants required for a desired product.
What is a limiting reagent? - ANSWER ✓The substance
that runs out first and restricts the amount of product
formed.
What is an excess reagent? - ANSWER ✓The substance
that remains after the reaction is complete because it is
not fully consumed.
What is theoretical yield? - ANSWER ✓The highest
possible amount of product predicted from a reaction.
What is actual yield? - ANSWER ✓The real amount of
product obtained from an experiment.
, What is percent yield? - ANSWER ✓The percentage
comparing actual yield to theoretical yield.
What is the significance of percent yield in
pharmaceutical production? - ANSWER ✓It helps reduce
waste and control production costs when manufacturing
drugs.
What is the mole to mole ratio? - ANSWER ✓The ratio
between moles of substances as indicated by coefficients
in a balanced equation.
How can we determine the mole ratio from a balanced
equation? - ANSWER ✓By reading the coefficients as
mole relationships and using them as conversion factors.
What is the purpose of writing conversion factors in
stoichiometry? - ANSWER ✓To convert between
different units and quantities during calculations.
What is the role of coefficients in a balanced chemical
equation? - ANSWER ✓They show the proportional
amounts of substances needed or produced.
What is the first step in identifying the limiting reagent? -
ANSWER ✓Convert all reactant amounts into moles.
What happens when there are more or less of some
reactants present in a reaction? - ANSWER ✓It influences
