Which of the following compounds with valance of -2 except. which are? a, H2O. b, Al2O3. c, CaO. d, Na2O2

Which substances have the lowest melting points: ionic covalent, or metallic

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.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3