Calculate the molar mass of

K2[Cu(C2O4)2]*2H2O

I got 353.81 is this correct ?

2K......78.2

Cu......63.5
4C......48
8O.....128
2H2O....36

Yes, I agree.

To calculate the molar mass of a compound, you need to add up the atomic masses of all the atoms present in the compound. Let's break down the given compound K2[Cu(C2O4)2]*2H2O and calculate its molar mass.

Step 1: Break down the compound into its individual components.
- K2: Two potassium (K) atoms
- [Cu(C2O4)2]: One copper (Cu) atom and two C2O4 (oxalate) groups
- 2H2O: Two water (H2O) molecules

Step 2: Find the atomic masses of all the elements involved.
The atomic masses of the elements can be found on the periodic table. The atomic masses are as follows:
- K (potassium): 39.10 g/mol
- Cu (copper): 63.55 g/mol
- C (carbon): 12.01 g/mol
- O (oxygen): 16.00 g/mol
- H (hydrogen): 1.01 g/mol

Step 3: Calculate the molar mass.
Now, add up the atomic masses for each component:
- K2: 2 x 39.10 g/mol = 78.20 g/mol
- [Cu(C2O4)2]: Cu + 2 x (C2O4)
- Cu: 63.55 g/mol
- C2O4: 2 x (2 x (C + 2 x O))
- C: 12.01 g/mol
- O: 16.00 g/mol
So, 63.55 g/mol + 2 x (2 x (12.01 g/mol + 2 x 16.00 g/mol)) = 365.62 g/mol
- 2H2O: 2 x (2 x (H2O))
- H2O: 2 x (H + O)
- H: 2 x 1.01 g/mol = 2.02 g/mol
- O: 16.00 g/mol
So, 2 x (2 x (2.02 g/mol + 16.00 g/mol)) = 68.16 g/mol

Finally, add up all the calculated masses:
78.20 g/mol + 365.62 g/mol + 68.16 g/mol = 511.98 g/mol

Therefore, the molar mass of K2[Cu(C2O4)2]*2H2O is approximately 511.98 g/mol, rather than 353.81 g/mol.

To calculate the molar mass of K2[Cu(C2O4)2]*2H2O, let's break down the compound into its individual components and calculate the molar mass of each element.

First, let's calculate the molar mass of each component:

1. K (Potassium):
- The atomic mass of K is 39.10 g/mol.

2. Cu (Copper):
- The atomic mass of Cu is 63.55 g/mol.

3. C2O4 (Oxalate):
- The atomic mass of C is 12.01 g/mol.
- The atomic mass of O is 16.00 g/mol.
- Since there are two carbon atoms and four oxygen atoms in each C2O4 group, the molar mass of C2O4 is:
(2 * 12.01) + (4 * 16.00) = 88.06 g/mol.

4. H2O (Water):
- The atomic mass of H is 1.01 g/mol.
- The atomic mass of O is 16.00 g/mol.
- Since there are two hydrogen atoms and one oxygen atom in each H2O molecule, the molar mass of H2O is:
(2 * 1.01) + 16.00 = 18.02 g/mol.

Now, let's calculate the molar mass of the entire compound:

K2[Cu(C2O4)2]*2H2O:
- Two potassium atoms (2 * 39.10 g/mol) = 78.20 g/mol.
- One copper atom (63.55 g/mol).
- Two C2O4 groups (2 * 88.06 g/mol) = 176.12 g/mol.
- Two water molecules (2 * 18.02 g/mol) = 36.04 g/mol.

Add up all the molar masses:
78.20 + 63.55 + 176.12 + 36.04 = 353.91 g/mol.

So, the correct molar mass of K2[Cu(C2O4)2]*2H2O is 353.91 g/mol, which is slightly different from your calculated value of 353.81 g/mol.