Why did a portion of the tabletop get cold when natasha placed her cold drink on the table?

It got cold because the molecules that comprise it started moving more slowly and were therefore creating less energy that would create heat.

Woah that’s a lot to read xd i’ll try though. i’ll get back t you if. i know the andwer

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