A substance that is composed only of atoms having the same atomic number is classified as

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.

Calculate the number of moles of ethane in 100 grams

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .