Question

Total no.of atoms present in 1.0 cm3 of solid urea Of density 0.3 g at 25degree celsius

Answer 1

Answer:

2.4×10²²

Explanation:

molecular molecular weight of urea is 60 grams per mole

if the given density is 0.3 gram per centimetre cube then one centimetre cube will have a mass of 0.3 grams

now since 60 grams of urea contains one mole urea molecules so. 3 grams will contain 0.05 moles of urea molecules urea has molecular formula NH2CONH2 so one urea molecule will contain 8 atoms

so there will be a total of 0.4 mol atoms