please clearly identify formulae required and stepwise calculation so i can understand how to do the calculations in future

1) How many moles in 100ml of 300mM HCl?

2) What volume of 1M NaOH would be required to prepare 250ml of 50mM NaOH?

3) How many moles of calcium carbonate are in 50mL of a 300ppm solution?

4) 200mL of NaOH neutralised 500mL 0.5M HCl. What was the concentration of NaOH?

5) How many moles are in 25mL of 100mg/L of sodium bicarbonate?

6) What volume of 1% (w/v) hydrochloric acid is required to neutralise 50mL of 20mM sodium hydroxide?

7) If you dissolve 0.0436g of Mg(OH)2 in 100mL of distilled water, what is the solutions concentration?

8) If you take 5mL of a 0.255M solution and make it up to the mark with distilled water in a 100mL flask, what would its concentration be?

9) Convert 0.006 moles of sodium hydroxide in 100mL to ppm.