New Worksheet - Chemistry - Atomic Mass

Formulas
1 amu = 1.66 x 10–24 g
g / amu = # of moles
1 mole = 6.02 x 1023

Problem 1
Write out the balanced reaction for the complete combustion of octane (C8H18).
Answer: ____________________________________________________________________________________

Problem 2
If an automobile completely combusts 7.94 grams of octane (see your reaction for #1), how many grams of carbon dioxide will be produced?
Answer: ___________________________

Problem 3
What is the mass of one KC2H3O2 molecule in amu?
Answer: ___________________________

Problem 4
Write out the balanced reaction for the formation of MgCr2O7.
Answer: ____________________________________________________________________________________

Problem 5
If in the reaction from #4 5.73 moles of Cr (chromium) are used, how many moles of MgCr2O7 will be produced?
Answer: ___________________________

Problm 6
What is the mass of one Lu atom in grams?
Answer: ___________________________


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