15 Questions
What is another term for the formula mass of a covalent compound?
Molecular mass
Which quantity is represented by Avogadro's number?
Number of entities in 1 mole of substance
How does the formula mass (amu) compare to the molar mass (g/mol) for any substance?
They are equal
What defines the chemical identity of a substance?
The types and relative numbers of atoms in its molecules or ions
What does a compound's percent composition provide?
The mass percentage of each element in the compound
Why is the empirical formula of a covalent compound compared to its molar mass?
To derive its molecular formula
What type of mixtures are solutions?
Homogeneous mixtures
What is the definition of molarity?
The number of moles of solute per liter of solution
Which unit is used to express lower concentrations conveniently?
ppm
What does dilution refer to in the context of solutions?
Decreasing the solute concentration
An aqueous solution is one where the solvent is:
Water
Which term is used for the components dissolved in a solvent?
Solutes
What type of units are commonly used in environmental, medical, and other fields?
Mass-based units
Which equation represents a relation between concentrations and volumes of a solution before and after dilution?
Dilution formula
What is a measure of the relative amount of solute in a given amount of solution?
Concentration
Test your knowledge on calculating formula mass, understanding the concept of mole, and determining Avogadro's number in chemistry. Learn about how to convert between mass and moles using these concepts.
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