monikaleon10 monikaleon10
  • 13-02-2022
  • Chemistry
contestada

How many atoms are in 20.5 mg (miligram) argon.
Express answer in scientific notation

Respuesta :

SenorMathWiz
SenorMathWiz SenorMathWiz
  • 14-02-2022

Answer:

3.09 x 10²⁰ atoms

Explanation:

We want to find the number of atoms in 20.5mg of argon.

We can use dimensional analysis to do so.

See attached image for table.

Needed conversions:

  • 1g = 1000mg
  • 1 mol of Ag = 39.948g
  • 1 mol = 6.022 x 10¹³ atoms

Ver imagen SenorMathWiz
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