Please help!

1.) Where do magnetic filed lines emanate (come) from?

A) South Pole
B) Both Poles
C) North Pole
D) It varies on where the magnet is placed.

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.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Increasing the substrate concentration in an enzymatic reaction could overcome which of the following? a) the need for a coenzymeb) allosteric inhibitionc) competitive inhibitiond) insufficient cofactors