1. Aluminum and iron oxide react to produce iron along with extreme heat 2Al * Fr2O4—> Al2O3+ 2Fe 45 KG aluminum is reacted with excess iron (III) oxide to produce 51 KG of iron. Calculate the percent yield for this reaction.

What substance has a mass of 9.5g and volume of 2.1cm^3

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize