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vitfil [10]
3 years ago
13

What is the combustibility of calcium?

Chemistry
2 answers:
Alexeev081 [22]3 years ago
3 0

the combustibility of calcium is relitivly high



Snezhnost [94]3 years ago
3 0

It's relatively high

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Which of the following would form a nonelectrolyte solution in water? A. KCl B. NaNO3 C. C6H12O6 D. Cu2SO4
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The pre-exponential constant and activation energy for the diffusion of iron in cobalt are 1.7 x 10-5 m2/s and 273,300 J/mol, re
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<u>Answer:</u> The temperature of the system will be 1622 K

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The equation relating the pre-exponential factor and activation energy follows:

\log D=\log D_o-\frac{E_a}{2.303RT}

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Consider the reaction. 2 HBr(g) ¡ H2(g) + Br2(g) a. Express the rate of the reaction in terms of the change in concentration of
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Answer :

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2HBr(g)\rightarrow H_2(g)+Br_2(g)

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\text{Rate of disappearance of }HBr=-\frac{1}{2}\frac{d[HBr]}{dt}

\text{Rate of disappearance of }H_2=+\frac{d[H_2]}{dt}

\text{Rate of formation of }Br_2=+\frac{d[Br_2]}{dt}

<u>Part A:</u>

The rate expression will be:

Rate=-\frac{1}{2}\frac{d[HBr]}{dt}=+\frac{d[H_2]}{dt}=+\frac{d[Br_2]}{dt}

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\text{Average rate}=-\frac{1}{2}\frac{d[HBr]}{dt}

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As we are given that the volume of the reaction vessel is 1.50 L.

\frac{d[Br_2]}{dt}=0.00176M/s

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