Calculate the expected concentrations of vitamin B6 and caffeine in the stock solution assuming

exactly 0.0506 g of pyridoxine hydrochloride (vitamin B6) and 0.1253 g of caffeine are dissolved
in a 100 mL volumetric flask.

mols B6 = grams B6/molar mass B6 =?

Then M B6 = mols B6/L soln = mols B6/0.1L = ?

Do same for caffeine.

Note: I assume you want concn in molarity; however, not that you could do it in g/L, M, m, N, etc.

Ah, we're diving into the world of chemistry, where pyridoxine hydrochloride (aka vitamin B6) and caffeine come together in a never-ending dance! Let's calculate the expected concentrations by dissolving 0.0506 g of vitamin B6 and 0.1253 g of caffeine in a 100 mL volumetric flask.

First, we need to convert the masses of vitamin B6 and caffeine into moles (because chemists love moles, not the furry kind). The molar mass of vitamin B6 is approximately 169.16 g/mol, while caffeine has a molar mass of roughly 194.19 g/mol.

So, 0.0506 g of vitamin B6 / 169.16 g/mol = about X moles of vitamin B6.

And for caffeine, 0.1253 g of caffeine / 194.19 g/mol = around Y moles of caffeine.

Now, let's find the concentration. Concentration = Moles / Volume. Since we dissolved the compounds in a 100 mL flask, the volume is 0.1 L (because there are 1000 mL in a liter).

For vitamin B6: Concentration of vitamin B6 = X moles / 0.1 L = Z mol/L

For caffeine: Concentration of caffeine = Y moles / 0.1 L = W mol/L

And there you have it! We've calculated the expected concentrations of vitamin B6 and caffeine in the stock solution. Now go forth and enjoy your chemistry-filled adventures, my inquisitive friend!

To calculate the expected concentrations of vitamin B6 and caffeine in the stock solution, we need to convert the given masses of pyridoxine hydrochloride (vitamin B6) and caffeine into moles, and then divide by the volume of the solution.

First, let's calculate the number of moles of each compound:

1. Pyridoxine hydrochloride (vitamin B6):
- Molar mass of pyridoxine hydrochloride (C8H11NO3.HCl) = 205.64 g/mol
- Moles of pyridoxine hydrochloride = Mass of pyridoxine hydrochloride / Molar mass
Moles of pyridoxine hydrochloride = 0.0506 g / 205.64 g/mol

2. Caffeine:
- Molar mass of caffeine (C8H10N4O2) = 194.19 g/mol
- Moles of caffeine = Mass of caffeine / Molar mass
Moles of caffeine = 0.1253 g / 194.19 g/mol

Now, let's calculate the concentrations:

3. Concentration of pyridoxine hydrochloride:
- Concentration = Moles of pyridoxine hydrochloride / Volume of the solution
- Volume of the solution = 100 mL = 0.1 L
- Concentration of pyridoxine hydrochloride = Moles of pyridoxine hydrochloride / Volume of the solution

4. Concentration of caffeine:
- Concentration = Moles of caffeine / Volume of the solution
- Concentration of caffeine = Moles of caffeine / Volume of the solution

Now we can substitute the values to calculate the concentrations:

Concentration of pyridoxine hydrochloride = (0.0506 g / 205.64 g/mol) / 0.1 L

Concentration of caffeine = (0.1253 g / 194.19 g/mol) / 0.1 L

Calculating these values will give you the expected concentrations of vitamin B6 and caffeine in the stock solution.

To calculate the expected concentrations of vitamin B6 and caffeine in the stock solution, we need to use the formula:

Concentration (in g/L) = (mass of solute in grams) / (volume of solution in liters)

First, we need to convert the volume of the flask from milliliters to liters:

Volume of solution = 100 mL = 100/1000 L = 0.1 L

Now, we can calculate the concentration of vitamin B6 (pyridoxine hydrochloride):

Concentration of vitamin B6 = (0.0506 g) / (0.1 L) = 0.506 g/L

Similarly, we can calculate the concentration of caffeine:

Concentration of caffeine = (0.1253 g) / (0.1 L) = 1.253 g/L

Therefore, the expected concentration of vitamin B6 in the stock solution is 0.506 g/L and the expected concentration of caffeine is 1.253 g/L.