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35 POINTS!!

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in water? check all that apply. view available hint(s) check all that apply. sodium fluoride, naf octane, c8h18 propanol, ch3ch2ch2oh potassium iodide, ki benzene, c6h6