đốt cháy 1 g octan trong bom nhiệt kế. dụng cụ được đặt vào một bình 1,2kg. nhiệt độ của nước và bom nhiệt từ 25 độ tới 33,2 độ C. Cbom = 837 J/K, C nước = 4,186 J/g. tính nhiệt đốt cháy octan (KJ/mol)

explanation:

since this is put under health, i would define "ethical (medical) behavior" the way the oath for doctors is recited.   "first do no harm."

but the term in general means when given a choice between right and wrong, we should always choose right. if we do, then we are practicing ethical behavior.

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.