How is mass calculated given density and volume volume divided by volume, sum of volume and mass, density multiplied by volume, difference of volume and mass

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?