How are 0.5 m of NaOH different from 0.5 M of NaOH ?

Are 0.5 mole of NaOH and 0.5 M of NaOH solution same ?

How many grams of NaOH are present in 250 mL of 0.5 M NaOH solution?

How many moles of NaOH are present in 27mL of 0.015 M NaOH ?

To a 4 L of 0.2 M solution of NaOH, 2L of 0.5 M NaOH are added. The molarity of the resulting solution is :

How many moles of NaOH are contained in 27 mL of 0.15 M NaOH ?

To a 4L of 0.2M solution of NaOH, 2L of 0.5M NaOH are added. The molarity of resulting solution is

2.5 litre of 1 M NaOH solution are mixed with another 3 litre of 0.5 M NaOH solution Then the molarity of the resulting

2.5 litre of 1 M NaOH solution are mixed and another 3 litre of 0.5 M NaOH solution. Then the molarity of the resulting solution is