A student was a bike at school every day at the top of the hill. As The students descends The hill, just be changed. Internally, the Energy is highest at though___ of the hill. The___energy increase its size as a bicycle approach___Of the hill.___Of the hill.

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

gold is my favorite solid.

b) nuclear ive learned that in a pedtrodic table