calculate the total no of moles present in 360 gm of oxalic acid
"higher secondary" must be an interesting school subject, but I've never heard of it. FOLLOW INSTRUCTIONS and put your subject, i.e. math, physics, social studies, etc., in the subject box when you post a question.
Oxalic acid is H2C2O4 with a mol wt of 126.07 grams
I expect you can take it from there . . .
To calculate the total number of moles present in a given amount of oxalic acid, you need to know the molar mass of oxalic acid and use the formula:
Number of moles = Mass (in grams) / Molar mass
Here's how you can calculate it step-by-step:
Step 1: Find the molar mass of oxalic acid (H2C2O4)
The molar mass of each element in oxalic acid is:
H (hydrogen): 1.00784 g/mol
C (carbon): 12.0107 g/mol
O (oxygen): 15.999 g/mol
Multiply the atomic masses by the respective number of atoms and sum them up:
Molar mass of oxalic acid = (2 * 1.00784) + (2 * 12.0107) + (4 * 15.999) = 90.034 g/mol
Step 2: Calculate the number of moles
Number of moles = Mass / Molar mass
Number of moles = 360 g / 90.034 g/mol ≈ 3.998 moles
Therefore, there are approximately 3.998 moles of oxalic acid in 360 grams of it.