If a nucleus undergoes beta particle emission
ita atomie number decreases by four and its
maas number decreases by two
ita atomie number decreases by two and its
masa number decreases by four
ita atomie number increases by one and its
mass number is unchanged.
ita atomie number decreases by one and its
maaa number is unchanged.
ita atomie number is unchanged and its mass
number decreases by one.

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

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

fe 55.85 g/mol and h2o 18.02 g/mol.

im pretty sure its b