What is the concentration of a solution formed by diluting 2…

What is the concentration of a solution formed by diluting 25.0 mL of a 3.2 M NaCl solution to 135.0 mL? DO NOT INCLUDE THE UNIT IN YOUR ANSWER. (Neatly write your calculation on a scratch paper, show your work slowly on the webcam before you submit the test. Take a photo of your work, and submit it on Final Exam Work assignment on the module.) 

A train traveling at a constant speed rounds a curve of radi…

A train traveling at a constant speed rounds a curve of radius 235 m. A lamp suspended from the ceiling swings out to an angle of 72.5° (with respect to the horizontal) throughout the curve. What is the speed of the train which is the same as the speed of the lamp?