The NaOH solution was made from 142.1 g NaOH, dissolved in water and diluted to 1000.0 +/- 0.6 mL What is the molarity of the NaOH solution prepared to react with the pennies?

What was the pH of the solution?

most sediment washes or falls into the river as a result of mass movement and runoff. other sediment eroded from the bottom or sides of the river.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8