If all the teams in the class received a sample of the same mixture, each team will not obtain the same result for its % composition. Give two main types of reasons.

Use a magnet to separate iron, evaporate water, i'm not sure how to separate the other two i'm sorry but good luck

The answer you are looking for is option d

Ive had this before. your answer would be d. hope this ya

13 protons and 14 neutrons.  this also means that the amount of electrons also is 13 because electrons have the same amount as protons..the atomic number means the amount of protons (which effectively tells you the electrons) the atomic mass, tells you the amount of protons and neutrons in the nucleus.hope this .