Answer to Question #100453 in General Chemistry for Jake

Question

what is the average mass of neon if 90.48% of neon is neon-20, 0.27% of neon is neon-21, and 9.25% of neon has 12 neutrons?

Answer 1

m= 0.9048 x 20 + 0.27 x 21 + 0.0925 x 22=20.1877 g.