Arectangle solid of unknown density is 5 m long two meters high and 4 meters wide. the mass of this solid is 300 grams. find the volume and density

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

How many grams of aluminum will there be in 98g of al2o3?

Which subshell is represented by the actinides family?