WorksheetsBell Ringer 4-18-24
Total questions: 10
Worksheet time: 5mins
What does a mole tell us in a chemical reaction?
The volume of the substances involved
The number of particles, atoms, or molecules involved
The temperature at which the reaction occurs
The duration of the reaction
What is the numerical value of Avogadro's number?
3.01 x 10^23 particles
6.02 x 10^22 particles
6.02 x 10^23 particles
6.02 x 10^24 particles
What is molar mass?
The mass of one molecule of a substance
The mass of one atom of a substance
The mass of one mole of a substance
The mass of one liter of a substance
For any element, the molar mass is numerically equal to the element's what?
Atomic number in grams
Atomic mass in grams
Number of protons in grams
Number of electrons in grams
What are the steps to calculate the molar mass of compounds?
Count the atoms, look up the molar mass, multiply by the number of atoms, add the masses
Count the molecules, divide by Avogadro's number, multiply by the atomic mass, sum the masses
Look up the atomic number, multiply by Avogadro's number, divide by the molar mass, sum the masses
Multiply the atomic mass by Avogadro's number, divide by the number of molecules, sum the masses
Calculate the molar mass of NO2.
30.01 g/mol
46.01 g/mol
64.01 g/mol
16.00 g/mol
Calculate the molar mass of SO2.
64.07 g/mol
60.07 g/mol
32.07 g/mol
48.07 g/mol
Calculate the molar mass of C6H12O6.
180.16 g/mol
162.14 g/mol
342.30 g/mol
150.13 g/mol
When converting grams to moles, what unit are you given?
Moles
Liters
Grams
Molecules
Explain how to convert moles to molar mass.
Divide the number of grams by the number of moles.
Multiply the number of moles by Avogadro's number.
Divide the number of moles by the number of grams.
Multiply the molar mass by the number of moles.
