Determine the percent yield of AI2S3

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What is the main reason why some developing countries fear the increase the free trade policies around the world?