Question 5 1 pts
A vinegar solution has a hydrogen ion concentration of 4.0 x 10-4 M. What is the pH?
7.8
5.6
3.4
2.4

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

May someone me with these science questions