A piece of aluminum foil 1.00 cm square and 0.510 mm thick is allowed to react with bromine to form
aluminum bromide.
How many moles of aluminum were used?(density of aluminum is 2.699g/cm^3)

Compare and contrast physical changes with chemical changes.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.