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Mariejimisgomec
Mariejimisgomec Mariejimisgomec
  • 13-03-2016
  • Chemistry
Answered

What is the mass of 2.90 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?

Verified Answer :

Willchemistry
Willchemistry Willchemistry
  • 15-03-2016

40.0 g ----------->  6.02x10²³ molecules
 ?? ---------------> 2.90x10²² molécules

mass = 2.90x10²² * 40.0 / 6.02x10²³

mass = 1.16x10²⁴ / 6.02x10²³

mass = 1.9269 g

hope this helps!

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