When 0.4 g of impure zinc reacted with an excess of hydrochloric acid, 126 mL of hydrogen was collected over water at 10◦C. The external pressure was 737.2 Torr. What volume
would the dry hydrogen occupy at 1 atm and
298 K? The vapor pressure of water at 10◦C
is 9.21 Torr

gravity causes stares to cluster i think so

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it