trộn V₁ lit dung dịch BA(OH)₂ có pH=12 với V₂ lit dd HNO₃ pH=2 thu được ( V₁+ V2) lit dd có pH=10. Tỉ lệ V₁: V₂=?

In an energy pyramid, which level has the most available energy?

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

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.