What is the lewis dot structure for SiS3-2

Sex cells from female reproductive organ? 1) mitosis 2) fertilization 3) zygote 4) eggs 5) meiosis 6) sperm

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?

Which of the following best describes technology a. something created for only scientists to use b.the method of thinking that scientists use. c.the application of engineering to create useful products. c. a scientific idea