Why do we need a “mole”?

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?