Đốt cháy hoàn toàn 122,6g hỗn hợp X gồm C2H3CHO, C4H5CHO, C5H7COOH và CH3COOH thu được 5,9 mol CO2 và x mol H2O. Giá trị của x là?

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.