Calculate the number of moles in 0,25grammes of sodium carbonate
Na2CO3 = 106 grams/mol
because
2*23 + 12 + 3*16 = 106
0.25 g * 1 mol/106 g = 0.00236 mols
Search it in google and you will have your answer.
Google will tell you for example that the molecular mass of sodium is about
23 g/mol
Google is unlikely to do the rest.
To calculate the number of moles in 0.25 grams of sodium carbonate, you need to use the formula:
moles = mass / molar mass
1. Determine the molar mass of sodium carbonate (Na2CO3):
- Sodium (Na) has a molar mass of 22.99 g/mol
- Carbon (C) has a molar mass of 12.01 g/mol
- Oxygen (O) has a molar mass of 16.00 g/mol
So, the molar mass of sodium carbonate (Na2CO3) can be calculated as:
2(22.99 g/mol) + 12.01 g/mol + 3(16.00 g/mol)
2. Calculate the molar mass:
= 45.98 g/mol + 12.01 g/mol + 48.00 g/mol
= 105.99 g/mol
3. Plug the values into the formula:
moles = mass / molar mass
moles = 0.25 g / 105.99 g/mol
4. Calculate the moles:
moles = 0.0024 mol
Therefore, there are approximately 0.0024 moles of sodium carbonate in 0.25 grams.