Danny weighs 4.9699 g of NaCl on a balance in a chemistry lab. how many moles of this compound did he weigh?? anita prepares a 0.02000L solution of NaCl from the mass of NaCl that danny weighed in the previous question. what is the concentration (molarity) of the newly prepared solution?

help please! and show all steps

it is stable as it is in group 0 which have full outer shells of electrons

i think it's letter a.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.