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Gemiola [76]
3 years ago
15

Iron (Fe) undergoes an allotropic transformation at 912°C: upon heating from a BCC (α phase) to an FCC (γ phase). Accompanying t

his transformation is a change in the atomic radius of Fe—from RBCC = 0.12584 nm to RFCC = 0.12894 nm—and, in addition, a change in density (and volume). Compute the percentage volume change associated with this reaction. Indicate a decreasing volume by a negative number.
Chemistry
2 answers:
Alex3 years ago
8 0

Answer:

false thought ia ion of neon = clarity active

Explanation:

x = 81254 \: and \: y = 91284

fenix001 [56]3 years ago
3 0

Answer:

The percentage volume change associated with this reaction is 97.66%

Explanation:

Please, the solution is in the Word file attached

Download docx
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Marysya12 [62]

4.648 gm of solute is needed to make 37.5 mL of 0.750 M KI solution.

Solution:  

We will start with the Molarity  

\text { Molarity }=\text { Mole of solute } \div \text { liter of solution }

Also we know 1000 ml = 1 L

Therefore 37.5 ml by 1000ml we obtained 0.0375L  

Equation for solving mole of solute

\text { Mole of solute }=\text { Molarity } \times \text { Liters of solution }

Now, multiply 0.750M by 0.0375

Substitute the known values in the above equation we get

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Also we know that Molar mass of KI is 166 g/mol

So divide the molar mass value to get the no of grams.

0.028 \times 166=4.648

So 4.648 gm of Solute is required for make 37.5 mL of 0.750 M KI solution.

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The answer is 3. As 5 * 3 = 15.

Is there any other equations I may be able to help you with? :)

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