The compound butyric acid gives rancid butter its characteristic odor. (2.7, 2.8, 6.5, 7.1...

The compound butyric acid gives rancid butter its characteristic odor. (2.7, 2.8, 6.5, 7.1, 7.2, 7.3, 7.4, 7.5)

a. If black spheres are carbon atoms, white spheres are hydrogen atoms, and red spheres are oxygen atoms, what is the molecular formula of butyric acid?

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b. What is the empirical formula of butyric acid?

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c. What is the mass percent composition of butyric acid?

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d. How many grams of carbon are in 0.850 g of butyric acid?

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e. How many grams of butyric acid contain 3.28 × 1023 oxygen atoms?

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f. Butyric acid has a density of 0.959 g/mL at 20 °C. How many moles of butyric acid are contained in 0.565 mL of butyric acid?