Một mẫu natri iođua thô được phân tích bằng cách mô tả sau đây. I- + SO42- → I2 + H2S (không cân bằng)

a) Xác định số oxi hóa đối với S trong SO42-.

Joseph has hypothesized that sound travels in waves. if he were following the scientific method, what should he do next? a. ask a question. b. test the hypothesis. c. study the results. d. tell other scientists about his hypothesis.

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

Stage in which a typical star has completely stopped fusion