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What is the pH of 0.1 M acetic acid? (Ka=1.76×10-5)

If you want to make a buffer with a final pH value of 7.0, which one of the following molecule would you chose?

Which one of the following statement is False:

How many mL of 1M HCl is needed to titrate 1L of 30 mM Tris base (pka=8.1) to get the final pH of 8.1?

Which one of the following statements about hydrophobic effect in ture:

If you want to make a buffer with a final pH value of 8.0, which one of the following molecule would you chose?

How many mL of 1M HCl is needed to titrate 1L of 20 mM Tris base (pka=8.1) to get the final pH of 8.1?

Which one of the following can not be considered as an amphipathic molecule:

Which of the following statement about hydrogen bond in water is not true:

Consider two adjacent properties whose boundary line between the two properties is found in the middle of a stream that forms the border of the two properties. Which of the following circumstances relating to the river would not affect the geographic location of that boundary line?