How many molecules of sulfur trioxide are in 78.0 grams?

Name: How many molecules of sulfur trioxide are in 78.0 grams?
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Question

Quizplus · Accepted Answer

The molar mass of sulfur trioxide (SO₃) is approximately 80.07 g/mol. Therefore, 78.0 grams of SO₃ is approximately 0.974 moles. Using Avogadro's number (6.022 × 10²³ molecules/mol), the number of molecules is 0.974 moles × 6.022 × 10²³ molecules/mol = 5.87 × 10²³ molecules.

How Many Molecules of Sulfur Trioxide Are in 78