Answer: 0.28 M
Step-by-step explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
According to the neutralization law,

where,
 = molarity of stock
 = molarity of stock 
 solution = 4.5 ml
 solution = 4.5 ml
 = volume of stock
 = volume of stock 
 solution = 27 ml
 solution = 27 ml
 = molarity of dilute c solution = ?
 = molarity of dilute c solution = ?
 = volume of dilute
 = volume of dilute 
 solution = 435 ml
 solution = 435 ml


Thus the concentration of LiOH be if 27 ml of a 4.5 M LiOH solution is diluted to 435 ml is 0.28 M