How many fe atoms and how many moles of fe atoms are in 500.g of iron?

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6

The image shows the process of which is used in nuclear power plants. photo attached

The lab procedure involves several factors, listed below some were variable and some were constant. label each factor below v for variable ot c for constant