Question

What is the molarity of 0.50 g of Na dissolved in a 1.5 L solution?

Answer 1

C=n/v where n is no.of moles v is volume n is find out by the formula mass/Mr where Mr is molecular or atomic mass also 1 dm3 is equal to 1 litre so putting in the formula lets find out the moles first that is 0.50/23 that gives u 0.0217391 moles when 0.0217391moles divided by 1.5 that gives u 0.0144928 which is molarity