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Zina [86]
3 years ago
15

nitrogen will react with hydrogen to form the compound ammonia. The compound formed has properties that are different from the e

lements that make it up. What has to occur in order for this compound to be formed?
Chemistry
2 answers:
Nimfa-mama [501]3 years ago
8 0

A chemical reaction must occur for a compound to have different properties.

Pretty Name


satela [25.4K]3 years ago
3 0
A chemical reaction must occur for a compound to have different properties.
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An alloy with an average grain diameter of 35 μm has a yield strength of 163 Mpa, and when it undergoes strain hardening, the gr
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Answer:

\sigma_y\ =210.2\ MPa  

Explanation:

Given that

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\sigma_y=\sigma_o+\dfrac{K}{\sqrt d}

\sigma_y\ =Yield\ strength

d = diameter

K =Constant

\sigma_o\ =material\ constant

So now by putting the values

d= 35 μm ,yield strength = 163 MPa

163=\sigma_o+\dfrac{K}{\sqrt 35}      ------------1

d= 17 μm ,yield strength = 192 MPa

192=\sigma_o+\dfrac{K}{\sqrt 17}           ------------2

From equation 1 and 2

192-163=\dfrac{K}{\sqrt 17}-\dfrac{K}{\sqrt 35}

K=394.53

By putting the values of K in equation 1

163=\sigma_o+\dfrac{394.53}{\sqrt 35}

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\sigma_y=96.31+\dfrac{394.53}{\sqrt d}

Now when d= 12 μm

\sigma_y=96.31+\dfrac{394.53}{\sqrt 12}

\sigma_y\ =210.2\ MPa

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