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Alekssandra [29.7K]
4 years ago
12

powdered sulfur is yellow and powdered iron is gray when powdered sulfur and powdered iron are mixed at 20° the powdered iron be

comes
Chemistry
1 answer:
quester [9]4 years ago
7 0
Since 20 C is 68 F it would be safe to say that its at room temp. since your are just miking them there chemical properties stay the same and the iron would remain magnetic Hope this helps :)
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The equilibrium constant for the reaction of carbon monoxide with water is 1.845. if 1.00 mol of each reactant is placed in a 2.
SpyIntel [72]
[CO] = 1 mol / 2L = 0.5 M

[
According to the equation:

and by using the ICE table:

             CO(g) + H2O(g) ↔   CO2(g) + H2(g)

initial     0.5            0.5                    0          0

change  -X              -X                   +X         +X
     
Equ       (0.5-X)       (0.5-X)                     X            X

when Kc = X^2 * (0.5-X)^2

by substitution:

1.845 = X^2 * (0.5-X)^2  by solving for X 

∴X = 0.26

∴ [CO2] = X = 0.26
4 0
3 years ago
There are three isotopes of X element (X):
Nutka1998 [239]

Answer:

Average atomic mass = 17.5 amu.

Explanation:

Given data:

X-17 isotope = atomic mass17.2 amu, abundance:78.99%

X-18isotope =  atomic mass 18.1 amu, abundance 10.00%

X-19isotope = atomic mass:19.1 amu, abundance: 11.01%

Average atomic mass of X = ?

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) + (abundance of 3rd isotope × its atomic mass)  / 100

Average atomic mass  = (78.99×17.2)+(10.00×18.1) +(11.01+ 19.1) /100

Average atomic mass =  1358.628 + 181 +210.291 / 100

Average atomic mass  = 1749.919 / 100

Average atomic mass = 17.5 amu.

8 0
3 years ago
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8 0
3 years ago
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diamong [38]

Answer:

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2)They need nutrition to live

3)Their body is made up of cells

4)All living things respond to stimuli.

Explanation:

8 0
3 years ago
Which body systems are responsible to transport materials around and out of the body?
Anni [7]

Answer:

Circulatory System

Explanation:

6 0
2 years ago
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