Please answer the following questions regarding the titration curve shown below. PH 14 12 10 5 10 15 20 25 mL titrant added 30 35 40 (a) What is true about the analyte and the titrant for this titration? It is a ---Select--- analyte with a ---Select--- titrant. (b) If the titrant has a molarity of 0.2750 M and there are 40.00 mL of analyte present, what is the molarity of the analyte? 4.0 M (c) What is the pka of the analyte in this titration to the nearest 0.5? 4.0

When sodium combines with water, sodium hydroxide and hydrogen gas are formed.  This is described as        ?     It is a physical change.     It is a homogeneous property.     It is a chemical property.     It is a physical property.

Jj.187.

The surface area of Earth is 510 * 106 km2, and 71% of this isocean. Using the data from the sample exercise, calculate theaverage depth of the world’s oceans in feet