Three people made the diagrams above to show what they think the Moon looks like when it is
seen from above (top view). In these diagrams, the sunlight is coming from the left, as shown by the
arrows. Which diagram is accurate and why?

What is the density of the black hole

When would a bouncy ball have the most potential energy

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.