Identify all the acidic hydrogens (pKa less than 25) in the following substances. List the acidic hydrogens by letter, example: acd. 1st structurefill in the blank 1 c 2nd structurefill in the blank 2

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?