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The chemical name for aspirin is acetylsalicyclic acid. Its molecular formulas is HC9H7O4.
(a) How many moles of HC9H7O4 are in 0.500 g tablet of aspirin?
(b) How many molecules of HC9H7O4 are in this aspirin tablet?
The strings:
S7P1A15 (containership - mass).
The math:
Pj Problem of Interest is of type containership (mass).
(a) Molar mass of HC9H7O4 = 1 + 108 + 7 + 64 = 180 g
So, 0.500 g of aspirin is 0.500/180 = 0.00277 mol of aspirin.
(b) 1 mole contains the Avogadro number of molecules = 6.02 x 1023 molecules
So, 0.00277 mol will contain 0.00277 x 6.02 x 1023 = 0.0167 x 1023 = 1.67 x 1021 molecules of aspirin.
The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
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