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calculate number of molecules in 120 g of urea brainly​

Sagot :

Rronoronoidn

Answer:

To find the number of molecules of urea in 120g, we first need to calculate the number of moles of urea. We do this by dividing the mass of urea by its molar mass. The molar mass of urea is 60.06 g/mol.

Number of moles of urea = 120 g / 60.06 g/mol = 2 moles

Now, to find the number of molecules of urea, we multiply the number of moles by Avogadro's number, which is 6.02 x 10^23 molecules/mol.

Number of molecules of urea = 2 moles