Question

Calculate mass of 2.5 moles of NH3​

Answer 1

Answer:

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• this is your answer

Answer 2

Answer:15.055*10^23 molecules

42.5 grams

Explanation: Molar mass of NH3 = 17g mol^-1

1 mole = 6.022*10^23 molecules

2.5 moles = 6.022*10^23 * 2.5

(Do not take 2 1/2 .)

=15.055*10^23 molecules of NH3

Mass = no. of moles * molar mass

W = 2.5 * 17 = 42.5 g