Which answer choice represents a balanced alpha emission nuclear equation?
ofen +
898
2002. pu he
o 109 b1 — 109 11 + he
— "ne

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Using the periodic table, complete the table to describe each atom. type in your answers

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.