Question

calculate the mass of the following in gram ?(1) 1 atom of sodium (2) 10 molecules of argon?​

Answer 1

Answer:

Step-by-step explanation:

(1) 1 atom of sodium

Mass of 6.022 × 10^23 atoms of Na = 23g (molecular mass of Na)

Mass of 1 atom of Na = 23/6.022 × 10^23 = 3.8 × 10^-23g

(2) Mass of 10 molecules of Argon

Mass of 6.022 × 10^23 molecules of Argon = 40

Mass of 10 molecules of Argon = 40/6.022 × 10^23. * 10 = 6.6 × 10^-22g

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