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KATRIN_1 [288]
3 years ago
10

When placed in a 100 mL cube-shaped box, a substance fills the cube and has a volume of 100 mL. When placed in a 50 mL tube, tha

t same amount of substance fills the tube and thus has a 50 mL volume. What is the state of the substance?
Chemistry
1 answer:
Elza [17]3 years ago
7 0

The substance is a gas.

The substance takes <em>both the shape and the volume</em> of the container, so it must be a gas.


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Carbon disulfide is prepared by heating sulfur and charcoal. The chemical equation is S2(g)+C(s)↽−−⇀CS2(g)????c=9.40 at 900 K Ho
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                          S_2(g)+C(s)\rightleftharpoons CS_2(g)

Initial conc.         1.51       0         0

At eqm. conc.   (1.51-x)  (x)       (x)

The expression for equilibrium constant for this reaction will be,

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Now put all the given values in this expression, we get :

9.40=\frac{x}{(1.51-x)}

By solving the term 'x', we get :

x = 1.365 M

Concentration of CS_2 = x M = 1.365 M

Now we have to calculate the moles of CS_2.

\text{Moles of }CS_2=\text{Concentration of }CS_2}\times \text{Volume of solution}=1.365mole/L\times 5.35L=7.303mole

Now we have to calculate the mass of CS_2.

Molar mass of CS_2 = 76 g/mole

\text{Mass of }CS_2=\text{Moles of }CS_2}\times \text{molar mass of }CS_2}=7.303mole\times 76g/mole=555.028g

Therefore, the mass of CS_2 is, 555.028 grams

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