A se ion has a mass number of 77 and a charge of −2. Determine the number of neutrons, protons, and electrons in this ion.

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use

Case # 51173878 weighs 814 pounds; case # 51173981 weighs 803 pounds; case # 51174058 weighs 817 pounds; case 51174178 weighs 815 pounds; case # 51174248 weighs 817 pounds; case # 51174495 weighs 781 pounds; case # 51174577 weighs 828 pounds. what are the case #'s of the two cases that weigh the same amount?

What term refers to the initial training given to all new employees?