Is located at the center of our galaxy, and is believed to be a supermassive black hole.
a. m13
b. cygnus x-1
c. cassiopeia a
d. sagittarius a*

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n

How does the attraction between particles affect the ability of a solvent to dissolve in a substance