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What are the steps to calculate the molar mass of a compound?
1. Break down the compound into its constituent elements. 2. Look up the atomic masses of each element on the periodic table. 3. Multiply each atomic mass by the number of atoms of that element in the compound. 4. Sum the results to obtain the molar mass.
What are the steps for converting grams to moles?
1. Identify the substance and its molar mass. 2. Divide the given mass (in grams) by the molar mass (in g/mol). 3. The result is the number of moles.
What are the steps for converting moles to grams?
1. Identify the substance and its molar mass. 2. Multiply the given number of moles by the molar mass (in g/mol). 3. The result is the mass in grams.
What are the steps for converting moles to number of particles?
1. Identify the substance and the number of moles. 2. Multiply the number of moles by Avogadro's number (6.022 x 10²³ particles/mol). 3. The result is the number of particles.
What are the steps for converting number of particles to moles?
1. Identify the substance and the number of particles. 2. Divide the number of particles by Avogadro's number (6.022 x 10²³ particles/mol). 3. The result is the number of moles.
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.