All Flashcards
What is the effect of using an incorrect molar mass in calculations?
It leads to incorrect mole conversions and inaccurate quantitative results.
What happens if you forget to use Avogadro's number when converting moles to the number of atoms?
The calculated number of atoms or molecules will be incorrect by a factor of 6.022 x 10²³.
What is the effect of correctly applying dimensional analysis?
Accurate conversion between units, leading to correct solutions in quantitative problems.
What happens when MgCO₃ is heated?
It decomposes into MgO(s) and CO₂(g): MgCO₃(s) → MgO(s) + CO₂(g).
What are the key differences between atomic mass and molar mass?
Atomic Mass: Mass of a single atom in amu | Molar Mass: Mass of one mole of a substance in g/mol. Numerically the same, but different units and scales.
What are the differences between moles and grams?
Moles: A unit of amount (6.022 x 10²³ particles) | Grams: A unit of mass. Moles are converted to grams using molar mass.
What is a mole?
A mole is a unit representing 6.022 x 10²³ particles (atoms, molecules, ions, etc.).
What is molar mass?
The mass in grams of one mole of a substance, expressed in g/mol.
What is Avogadro's number?
The number of particles in one mole of a substance: 6.022 x 10²³.
What is dimensional analysis?
A technique for converting between different units using conversion factors to cancel out unwanted units.
Define atomic mass.
The mass of one atom in atomic mass units (amu); numerically equal to molar mass in g/mol.