If the inspiratory reserve volume is 3000 mL, the tidal volume is 500 mL, the expiratory reserve volume is 1000 mL, and the residual volume is 1000 mL, what is the vital capacity?

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#Question id: 356

#1. Molecules and their Interaction Relevant to Biology

How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?

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#Question id: 374

#1. Molecules and their Interaction Relevant to Biology

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:

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#Question id: 375

#1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the lowest pH is:

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#Question id: 376

#1. Molecules and their Interaction Relevant to Biology

Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is

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#Question id: 377

#1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the highest pH is:

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#Question id: 378

#1. Molecules and their Interaction Relevant to Biology

Which of the following statements about buffers is true?