Which of the following represents beta decay? A. 169GD → 166 Tb + e
B. TC-TC+
C. Gd - 16 Sm + He
D. 199 Eu + de
e->
159 Sm

One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground

V1t2 = v2t1 is an expression of who’s law