Provide details on what you need help with along with a budget and time limit. Questions are posted anonymously and can be made 100% private.
Match with a Tutor
Studypool matches you to the best tutor to help you with your question. Our tutors are highly qualified and vetted.
Get Quality Help
Your matched tutor provides personalized help according to your question details. Payment is made only after you have completed your 1-on-1 session and are satisfied with your session.
Please help me with this chem homework! lots of parts but simple
User Generated
qoebja19
Science
Description
Unformatted Attachment Preview
26. The crystal lattice of platinum at normal pressure (1 atm) and temperature (298 K) is shown
below.
The platinum atoms adopt a lattice structure that is
cubic (1)
The coordination number of the platinum atom in the lattice is:
(1)
Each atom at the corner of the cube is shared among unit cells (1)
Each atom at the center of a face is shared among unit cells (1)
The total number of platinum atoms/unit cell is:
The mass of the unit cell is (please report in amu):
The edge length of the unit cell is determined from X-ray measurements to be 3.924 8. The
volume of the unit cell is therefore:
A (1)
The platinum atoms occupy % of the available unit cell volume (1)
The remaining % of the unit cell volume is unoccupied space (1)
The volume of the platinum atoms only/unit cell is
A' (1)
Assuming the platinum atoms are perfect spheres, the platinum atom radius is
(Given: volume of a sphere is 4/3Ar”). Please show all work below. (3)
А
Given 1 A = 10% cm and 1 amu = 1.66054 x 1024 g, please convert your platinum density from
amu/A to g/cm'. Please show all work below. (2)
Purchase answer to see full
attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Would you like to help your fellow students? Are you in need of an additional source of income? Apply to become a tutor on Studypool! Our best tutors earn over $7,500 each month!