What anhydrous salt has a molecular mass of 258g/mol? I believe the results from my experiment were incorrect and i can not figure out the general formula for the hydrated salt with a molecular mass of 258g/mol. please help
To find the anhydrous salt with a molecular mass of 258g/mol, we can use a periodic table to determine the possible elements that could combine to form the salt.
The atomic masses of the common elements are:
- Hydrogen (H) = 1g/mol
- Carbon (C) = 12g/mol
- Nitrogen (N) = 14g/mol
- Oxygen (O) = 16g/mol
- Sodium (Na) = 23g/mol
- Magnesium (Mg) = 24g/mol
- Aluminum (Al) = 27g/mol
- Sulfur (S) = 32g/mol
- Chlorine (Cl) = 35.5g/mol
- Potassium (K) = 39g/mol
- Calcium (Ca) = 40g/mol
One way to approach this is to consider the possibilities for each element individually.
Let's start with Sodium (Na). It has an atomic mass of 23g/mol. If we divide 258g/mol by 23g/mol, we get a quotient of 11.3, which means we would need more than one Na atom to reach a molecular mass of 258g/mol.
Next, let's consider Calcium (Ca) with an atomic mass of 40g/mol. If we divide 258g/mol by 40g/mol, we get a quotient of 6.45, which is also larger than 1.
Continuing this process for all the elements, we find that none of them will give us a whole number when the molecular mass of 258g/mol is divided by their atomic mass.
This suggests that the anhydrous salt with a molecular mass of 258g/mol may consist of a combination of two or more elements. Without more information about the elements involved, it's difficult to determine the exact formula of the anhydrous salt.
Regarding the hydrated salt with a molecular mass of 258g/mol, you mentioned that you believe the results from your experiment were incorrect. To determine the general formula of the hydrated salt, we need to know the percentage of water present in the compound. The general formula for a hydrated salt is usually expressed as (anhydrous salt) · nH2O, where "n" represents the number of water molecules associated with each formula unit of the anhydrous salt.
Once you obtain the percentage of water present, you can convert it to moles and determine the ratio between the anhydrous salt and water. That will give you the general formula for the hydrated salt.
If you have any additional information or suspect that there may be some errors in your experimental data, please provide them, and I would be happy to assist you further.