how many moles are present in 25ml of 0.1m of na2co3
I am assuming you intended to write 0.1 M and not 0.1 m. M stands for molarity; m stands for molality. Chemistry is more exact than writing sentences with no cap and formulas with no caps. CO, Co, and co all mean different things. May I suggest you find the caps key on your keyboard and use it.
mols = M x L = ?
To calculate the number of moles present in a solution, we need two pieces of information: the volume of the solution and the concentration of the solute.
In this case, you have given the volume of the solution as 25 mL and the concentration of Na2CO3 as 0.1 M (0.1 moles per liter).
First, we need to convert the volume from milliliters to liters. There are 1000 milliliters in a liter, so we divide 25 mL by 1000 to get 0.025 liters.
Now, we can calculate the number of moles using the formula:
Number of moles = Concentration x Volume
Number of moles = 0.1 M x 0.025 L
Number of moles = 0.0025 moles
Therefore, there are 0.0025 moles of Na2CO3 present in 25 mL of 0.1 M Na2CO3 solution.