Cobalt has an atomic number of 27 and atomic mass of 59. How many neutrons does cobalt have?  A. 32
B. 31
C. 30
D. 33

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Right anwser gets marked brainliest newton's discovery concerning how fast an object will change speed is the: 1st law 2nd law 3rd law universal gravitation

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —