What is one word for an obscuring of light from one celestial body to another between it and the observer

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

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.