A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

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#Question id: 11651

#Unit 10. Ecological Principles

Succession on a newly exposed site that was not previously occupied by soil and vegetation refers to

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#Question id: 10720

#Unit 10. Ecological Principles

What is the Jaccard index between the two communities?

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#Question id: 1425

#Unit 4. Cell Communication and Cell Signaling

During metastasis, cells may undergo an epithelial-to-mesenchymal transition whereby there is a(n):

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#Question id: 11486

#Unit 7. System Physiology – Animal

The contraction of skeletal muscles is based on ________

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#Question id: 11079

#Unit 7. System Physiology – Animal

The diffusing capacity of a gas is the volume of gas that will diffuse through a membrane each minute for a pressure difference of 1 mm Hg. Which of the following gases is often used to estimate the oxygen diffusing capacity of the lungs?