URGENT TIMED EXAM In a sample of silver, 51.84% of the atoms have a mass of 106.905 amu and 48.16% have a mass of 108.905 amu. What is the atomic mass of silver?

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

Stage in which a star’s outer layers have started to cool and grow outward?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?