Câu 28. Khối lượng của electron tính bằng kilogam là A. me = 1,67.10–27.
B. me = 1,6.10–19.
C. me = 1,67.10–24.
D. me = 9,1.10–31

Which statement correctly describes potassium iodide, ki? there is a one-to-one ratio of potassium ions to iodide ions. potassium gains electrons and iodine loses electrons during the reaction. the lattice is held together by potassium anions and iodide cations.

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?