HELP ASAP PLEASE. Which of the following statements is the best example of an interaction between the atmosphere and the hydrosphere? A. Intense heat from a fire may cause rocks to break apart.

B. Lack of moisture in the air causes pond water to evaporate.

C. Lightning strikes from the air may start a fire by burning dry vegetation.

D. Increased erosion of soil may lead to increased sediments in the water.

What is the number of atoms in 3.54 mol s

Identify two types of chemical bonding in the source of dietary potassium

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.