Which of the following substances is a base? 5 points
a. Vinegar
b. Ammonia
c. Lemon juice
d. Distilled water

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains