객관식
Given the chemical formula 6Al2O3, how many total atoms of aluminum and oxygen are present?
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2. Atoms & Elements
Calculating Molar Mass
Multiple Choice
What is the total mass in grams of 0.75 mole of SO_2?
A
48 g
B
48.0 g
C
48.1 g
D
60 g
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검증된 단계별 안내1
Identify the chemical formula of the compound, which is sulfur dioxide (SO_2).
Calculate the molar mass of SO_2 by adding the atomic masses of sulfur (S) and oxygen (O). Use the atomic masses: S = 32.07 g/mol and O = 16.00 g/mol.
Calculate the molar mass of SO_2 using the formula: \(\text{Molar mass of SO}_2 = 32.07 + 2 \times 16.00\) g/mol.
Use the formula to find the mass from moles: \(\text{Mass} = \text{moles} \times \text{molar mass}\).
Substitute the given moles (0.75 mole) and the molar mass of SO_2 into the formula to find the total mass in grams.
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