In hot water hydronic systems, water is heated and circulated through pipes to a heat transfer component called a(n) unit.

Can someone me with questions 15 to 17 plz.

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize