After leaving the cockroaches in their metabolic chamber for one hour, i measured the gases in the chamber. the fraction of oxygen in the chamber was 0.18. what was the metabolic rate of the cockroaches in ml o2/hr? (assume the room air is 21% o2 and chamber volume = 500ml.)

Can someone me with these questions plz.

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.

Which element is least likely to undergo a chemical reaction