An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. which is the best conclusion that can be drawn? a. 7 neutrons and 8 protons. b. 7 electrons and 8 protons. c. 8 neutrons and 7 electrons. d. 8 electrons and 7 protons.

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

How to convert a density of 0.791g/cm3 to lb/ft3

The arrangement of particles is most ordered in a sample of