If i have 42x10 to the 23rd power of atoms of Xe how many grams do i have? show all your work

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride

Certain types of organisms such as fireflies and anglerfish can produce light through chemical reactions in a process called bioluminescence. what kind of chemical reactions occur during bioluminescence? o a) exothermic ob) endothermic oc) recomposition od) decomposition