Question

The density of a sample of metal was measured to be 10.50 g/cm^3 . An X-ray diffraction experiment measures the edge of a face-centered cubic cell as 408.0 pm . What is the atomic mass of the metal? Express the atomic mass to one decimal place and include the appropriate units.

Review | Constants The density of a sample of metal was measured to be 10.50 g/cmº. An X-ray diffraction experiment measures the edge of a face-centered cubic cell as 408.0 pm Part A What is the atomic mass of the metal? Express the atomic mass to one decimal place and include the appropriate units. .: Å O O ? atomic mass = Value Units Submit Previous Answers Request Answer

Answer 1

• Density of metal is given as: 1. no. of atoms per unit cell = 2 x mis atomic mass a 3 x Na density unit cell length. Z=4 for F cc P: 10.50 giamo a = 408 pm = 409 410-10 cm. Nai Avogadro's Nuernber. ,. 10.50 = 4 xm (408x10-103 x 6.022x1023 => m= 10.50x (408x10-10)3x6.02281629 Me 107.36 rounding off [m= 107.431 moči m= 107.49 mol Scanned with CamScanner