Assume that lemon Juice os 0.05M, the mass of the 5.0ml should be about 5 grams. So the Mass of acid in your sample is about 0.25 grams. Using this and the moles of acid calculate the gfm of the acid in the lemon juice.
I was able to calculate moles, but do not know how to do the rest.
mols = grams/gfm
You say you have mols and you know grams, solve for gfm.
To calculate the gfm (molar mass) of the acid in the lemon juice, we can use the equation:
gfm = mass / moles
Given that the mass of acid in your sample is about 0.25 grams and you have already calculated the moles of acid, you can now calculate the gfm.
Here's how you do it:
1. Convert the mass of acid from grams to moles using the molar mass of the acid.
- You can find the molar mass of the acid by looking up the formula of the acid in a chemical database or using a periodic table.
2. Divide the mass of the acid by the moles of acid to get the gfm (molar mass) of the acid.
Let's assume that the acid in the lemon juice is citric acid (C6H8O7).
1. Calculate the moles of the acid using the equation:
moles = mass / molar mass
Therefore,
moles = 0.25 g / gfm (where gfm is the molar mass of citric acid)
2. Rearrange the equation to solve for gfm:
gfm = mass / moles
Substitute the values:
gfm = 0.25 g / moles
Now, insert the value of moles that you calculated earlier.
After performing these calculations, you should have the gfm (molar mass) of the acid in the lemon juice. Remember to use the appropriate units and round to the correct number of significant figures.