Chemistry

posted by .

An element has hcp packing with a hexagonal unit cell. Its density is 4.5 g/cm3 and the unit cell volume is 3.53 x 10-23 mL. Calculate the molar mass (g/mol) of the element to three significant figures.

  • Chemistry -

    The mass = volume x density
    You know the volume of the unit cell and the density; therefore, you can calculate the mass of the unit cell.
    Divide the mass of the unit cell by the number of atoms per unit cell to obtain the mass a single atom; then multiply by Avogadro's number to arrive at the molar mass. Post your work if you get stuck. Your text or notes should contain information for the number of atoms per unit cell as well as the value to use for Avogadro's number.

  • Chemistry -

    90

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    An element has hcp packing with a hexagonal unit cell. the volume of the unit cell is 5.71E-26 L. Calculate the density (kg/m3) of the element.
  2. chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its densiry is 2.70E3 kg/m3 and the unit cell volume is 6.64E-29 m3. Calculate the molar mass (g/mol) of the element to 3 significant figures.
  3. Chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 8.92 g/cm3 and the unit cell volume is 4.72 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures.
  4. Chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 8.92 g/cm3 and the unit cell volume is 4.72 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures.
  5. chem

    An element has ccp packing with a face-centered cubic unit cell. Its density is 1540 kg/m3 and the unit cell volume is 1.73 x 10-22 cm3. Calculate the molar mass (g/mol) of the element to three significant figures. CCP: cubic close …
  6. Chemistry

    An element has bcc packing with a body-centered cubic unit cell. Its density is 19300 kg/m3 and the unit cell volume is 3.17 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures. The element rubidium …
  7. Chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 12400 kg/m3 and the unit cell volume is 5.50 x 10-29 m3. Calculate the molar mass (g/mol) of the element to three significant figures. Please explain how …
  8. chemistry

    An element has hcp packing with a hexagonal unit cell. Its density is 21000 kg/m3 and the unit cell volume is 2.94 x 10-23 mL. Calculate the molar mass (g/mol) of the element to three significant figures.
  9. chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 1770 kg/m3 and the unit cell volume is 1.50 x 10-28 m3. Calculate the molar mass (g/mol) of the element to three significant figures.
  10. Chemistry

    The element Sc has hcp packing with a hexagonal unit cell. The density of Sc is 3000 kg/m3. Calculate the volume (L) of the unit cell of Sc. Sc Molar Mass =44.956 It is hcp, so it has 2 atoms/unit cell. I would appreciate any help …

More Similar Questions