If a piece of aluminum foil weighs 0.225 grams and has the length of 5.00 cm, and a width of 4.50 cm, Find the thickness of the foil in centimeters. The density of aluminum is 2.70 g/cm^3.

What is the chemical formula of the following compound

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?