A neutral atom of aluminum-27 contains -A: 13 protons and 27 electrons B: 14 protons and 13 neutrons C: 13 electrons, 13 protons, and 14 neutrons D: 13 electrons, 14 protons, and 13 neutrons
C 13 electrons, 13 protons and 14 neutrons, its easy to work out just learn to use the periodic tableMinus the atomic number from the atomic weight to get the number of neutronsThe number of electrons and protons are the same in a neutral atom and will equal the atomic number
when you heat a sample, (or cool), you usually want to heat it up slowlyHeating something too fast will result in missiong some observationsAnd also, stuff like crystallizing needs to heat and cool very slowlyFor the good of science!!!
try it out and you'll see why! lolthe heat will cause the very shallow dish of liquid to boil over very rapidly, causing it to splash over and making you loose large amounts of the dissolved sample that you are trying to recover! this ruins your experimental yield!
