Question

If you need 3.6 x1024 molecules of oxalic acid, H2C2O4, how many grams of the acids should you weigh out in the laboratory?

Answer 1

To calculate the mass of oxalic acid needed, convert the given number of molecules to moles and then grams using the molar mass of oxalic acid. The mass is approximately 540.18 grams.

Step-by-step explanation:

To calculate the mass of oxalic acid needed, we need to convert the given number of molecules to moles, and then convert moles to grams using the molar mass of oxalic acid. The molar mass of H2C2O4 is 90.03 g/mol.

Step 1: Convert molecules to moles. 3.6 x 10^24 molecules ÷ 6.02 x 10^23 molecules/mol = 6 moles.

Step 2: Convert moles to grams. 6 moles x 90.03 g/mol = 540.18 grams. Therefore, you should weigh out approximately 540.18 grams of oxalic acid in the laboratory.

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