Which statement about distinguishing an ionic compound from a covalent compound by its formula is true? a it is impossible to tell from the formula. b it is determined by the presence of subscripts. c knowing the presence of pluses and minuses determines the difference. d knowing the total number of atomic particles makes it possible.

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

Drag the tiles to the correct locations. each tile can be used more than once, but not all tiles will be used. one or more locations will remain empty. nitrosyl fluoride has the chemical formula nof nitrogen has five valence electrons, oxygen has six, and fluorine has seven. complete the lewis structure for this covalent compound. f n = = = . : : 0 : reset next um. all rights reserved us 2

Which property of a substance can be determined using a ph indicat