The two naturally occurring isotopes of antimony, 121sb (57.21 percent) and 123sb (42.79 percent), have masses of 120.904 and 122.904 amu, respectively. what is the average atomic mass of sb? (a) 121.90 amu (b) 122.05 amu (c) 121.76 amu (d) 121.34 amu (e) 122.18 amu

Why does a cake rise when you bake it? ♡

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Most materials are not magnetic because their magnetism has worn off. their magnetic domains are arranged randomly. they lack magnetic fields. earth’s heat has destroyed their magnetism.