Question

what is the mass in grams of 3moles of nitrogen atom????

Answer 1

hello friend..!!

number of moles = given mass / molar mass

⇒ given mass = number of moles x molar mass

we know that the molar mass of nitrogen is 28g/mol

therefore,  mass = 3 x 28 

implies mass = 84g

therefore 3 moles of nitrogen weighs 84g.

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hope it helps..!!