Phản ứng tạo H2O có hiệu ứng nhiệt bằng -248kJ/mol. Hiệu ứng nhiệt phân hủy H2O có hiệu ứng nhiệt bằng bao nhiêu và cho biết phản ứng phân hủy H2O thuộc loại phản ứng nào? *

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.