Assume the given amount of RbF fully dissociates in water. Calculate the molarity of a solution if 184.75 g of RbF are dissolved into a solution of water that has a final volume of 1.00 L.

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

C. 1s22s22p63s23p43d104s24p5

The answer to the question is d

1.75 is the weight of one medium egg