Х Determine the number of grams of MgBr2 in 2.5 x 1019 molecules of MgBr2. (Atomic
weight of Mg = 24.31 and Br = 79.91).
=
Note: 10^-2 means 10-2
O 4.6 x 10^21
O 7.6 x 10^-3 g
O 8.2 x 10^40
0 4.2 x 10^-5
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the answer would be a

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

56 moles of   lieter in chemistry

b) nuclear ive learned that in a pedtrodic table