Two stars appear equally bright in the night sky. What additional information could help to identify their distances from Earth? The ages of the stars

The sizes of the stars

The stars’ locations in the night sky

The types of fusion occurring in the stars

You would do 1500/4 and the answer is 375

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.