Multiple Choice
What is the mass, in grams, of 8.50 × 10^{22} molecules of NH_3?
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2. Atoms & Elements
Calculating Molar Mass
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What is the total mass in grams of 0.75 moles of SO_2?
A
48.0 g
B
48.1 g
C
60.0 g
D
32.0 g
Verified step by step guidance1
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: sulfur = 32.07 g/mol, oxygen = 16.00 g/mol.
Write the molar mass calculation as: \(\text{Molar mass of SO}_2 = 32.07 + 2 \times 16.00\) 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 mol) and the molar mass of SO_2 into the formula to find the total mass in grams.
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