Question

Convert 645 grams of N2O2 to moles.

Answer 1

To convert mass to moles, we need to use the molar mass, which tells us how many moles there are in 1 kg of a molecule.
The molar mass of N2O2 is (2 x 28.04) + (1 x 44.01) = 92.1 g/mol.

So, converting 645 grams of N2O2 to moles would be:
(645 grams) / (92.1 g/mol) = 6.99 moles

Thus, we have 6.99 moles of N2O2.

Answer 2

Answer:

So, to find the molar mass of N2O2, we add the molar mass of two nitrogen atoms and two oxygen atoms:   Molar mass of N2O2 = (2 * molar mass of N) + (2 * molar mass of O)   Molar mass of N2O2 = (2 * 14 g/mol) + (2 * 16 g/mol)  Molar mass of N2O2 = 28 g/mol + 32 g/mol  Molar mass of N2O2 = 60 g/mol   Step 2: Convert grams to moles.   To convert grams to moles, we use the equation:   moles = mass (in grams) / molar mass   moles of N2O2 = 645 g / 60 g/mol   moles of N2O2 = 10.75 mol   So, 645 grams of N2O2 is equal to approximately 10.75 moles of N2O2.   It's important to note that the molar mass values used here are approximate and rounded for simplicity.

Explanation: