QQuestionChemistry
QuestionChemistry
"Calculate the molar mass of SiO₂. Show your work by entering the atomic mass in the proper boxes.
Molar mass of SiO₂ = ... g/mol Si + 2 * ... g/mol O = ... g/mol SiO₂ (total)"
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Answer
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Step 1:: Write down the atomic masses of Si and O.
The atomic mass of Si is approximately 28.09 g/mol, and the atomic mass of O is approximately 16.00 g/mol. These values can be found on a periodic table.
Step 2:: Calculate the molar mass of SiO₂.
The chemical formula for silicon dioxide, SiO₂, indicates that one mole of this compound contains one mole of Si atoms and two moles of O atoms. Therefore, the molar mass of SiO₂ can be calculated as follows: molar mass of SiO₂ = molar mass of Si + 2 * molar mass of O
Step 3:: Substitute the atomic masses into the formula.
molar mass of SiO₂ = 28.09 g/mol + 2 * 16.00 g/mol
Step 4:: Calculate the result.
molar mass of SiO₂ = 28.09 g/mol + 32.00 g/mol = 60.09 g/mol
Final Answer
The molar mass of SiO₂ is approximately 60.09 g/mol.
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