nguyên tử của nguyên tố y được cấu tạo bởi 36 hạt . trong hạt nhân hạt mang điện bằng số hạt không mang điện. số đơn vị diện tích hạt nhân z là bao nhiêu

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

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.

How many moles of al3+ ions are in 1.25 moles of al2o3