What number should be written in front of Na to balance the equation? Na + MgCl2 → NaCl + Mg
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What problem would a person have if the nucleic acid in one of his or her cells were damaged?

There are main groups in the modern periodic table of elements

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?