Data was collected by students in an acid base titration lab. They used 1.63 M Ca(OH)2(AQ)
What is the molarity of the acid.

Data Table Two HNO3(AQ) Ca(OH)2(AQ)
Initial buret reading 37.5 mL 45.0 mL
Final buret reading 57.0 mL 67.8 mL

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry