Calculate the number of molecules of Al2O3, that are produced when 5.5 mol of Fe is produced in the following reaction. 2Al(s) + 3FeO(s) + 3Fe(s) + Al2O3(5) 2.4 x 1023 molecules 1.1 x 1024 molecules b. 1.2 x 1023 molecules d. 3.6 x 1023 molecules ​

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

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this