Rebecca conducted a study on the effects of sleep deprivation for twelfth-graders during midterm exams. she followed two groups of five students each. after two grading periods, she turned in the data she collected. which two steps in the scientific process were left out of her study? a. conclusion and communication b. problem and hypothesis c. experimentation and summation d. research and analysis

I think the answer would be B. She never stated her hypothesis and her problem. Hope I didn't give you the wrong answer. :)

58750.08068 is the answer i think

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.