I have 345 mL of a 1.5 M NaCl solution, if I boil the water until the volume of the solution is 250 mL what will the molarity of the solution be? Round to the nearest whole number

Answer&Explanation:

According to dilution law concentration before dilution is equal to concentration after dilution hence;;

Volume×molarity(before)=volume×molarty(after)

345ml×1.5M=?M×250ml

Cross multiplication

Molarity will be equal to 2.07M

your answer would be a. 12.5 kg

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.