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Asked Feb 7, 2020
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PLEASE double and triple check your answers and help me with all the parts. There are two parts attached as 2 screenshots.

Iridium (Ir) has a face-centered cubic unit cell with an edge length of 383.3 pm. The
density of iridium is 22.61 g/cm3. Use these data to calculate a value for Avogadro's
5.
number.
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Iridium (Ir) has a face-centered cubic unit cell with an edge length of 383.3 pm. The density of iridium is 22.61 g/cm3. Use these data to calculate a value for Avogadro's 5. number.

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The unit cell for an oxide of an unknown metal A is shown below. The oxygen
atoms are all in the fcc positions. The metal ions are all in the tetrahedral sites
(holes). What is the formula of this compound? What is the charge of the metal ions
in this compound?
6.
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The unit cell for an oxide of an unknown metal A is shown below. The oxygen atoms are all in the fcc positions. The metal ions are all in the tetrahedral sites (holes). What is the formula of this compound? What is the charge of the metal ions in this compound? 6.

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Expert Answer

Step 1

Since we only answer one question, we’ll answer the first one. Please resubmit the question and specify the other question you’d like answered.

Step 2

Given data:

Chemistry homework question answer, step 2, image 1

Step 3

The conversion of pm to cm is shown below.

Chemistry homework question answer, step 3, image 1

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