Is the freezing of diesel fuel a chemical change

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

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.