객관식
If a sample of CO_2 contains 48 grams of oxygen, what is the mass of the CO_2 sample?
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2. Atoms & Elements
Calculating Molar Mass
객관식
What is the molar mass of sulfur dioxide (SO_2)?
A
64.07 g/mol
B
80.07 g/mol
C
32.07 g/mol
D
48.07 g/mol
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검증된 단계별 안내1
Identify the chemical formula of sulfur dioxide, which is SO\_2, meaning it contains one sulfur (S) atom and two oxygen (O) atoms.
Find the atomic masses of sulfur and oxygen from the periodic table: sulfur (S) has an atomic mass of approximately 32.07 g/mol, and oxygen (O) has an atomic mass of approximately 16.00 g/mol.
Calculate the total mass contributed by sulfur by multiplying the number of sulfur atoms by its atomic mass: 1 \(\times\) 32.07 g/mol.
Calculate the total mass contributed by oxygen by multiplying the number of oxygen atoms by its atomic mass: 2 \(\times\) 16.00 g/mol.
Add the masses of sulfur and oxygen together to find the molar mass of SO\_2: (1 \(\times\) 32.07) + (2 \(\times\) 16.00) g/mol.
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