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2 years ago

Calculate the height of a column of liquid benzene (d=0.879g/cm3), in meters, required to exert a pressure of 0.790 atm .

Chemistry

2 answers:

Simora [160]2 years ago

7 0

Here we have to get the height of the column in meter, filled with liquid benzene which exerting pressure of 0.790 atm.

The height of the column will be 0.928 m.

We know the relation between pressure and height of a liquid placed in a column is: pressure (P) = Height (h) × density of the liquid (ρ) × gravitational constant (g).

Here the pressure (P) is 0.790 atm,

or [0.790 × (1.013 × 10⁶)] dyne/cm². [As 1 atm is equivalent to 1.013 × 10⁶ dyne/cm²]

Or, 8.002ₓ10⁵ dyne/cm².

density of benzene is given 0.879 g/cm³.

And gravitational constant (g) is 980 cm/sec².

On plugging the values we get:

8.002×10⁵ = h × 0.879 × 980

Or, h = 928.931 cm

Or, h = 9.28 m (As 1 m = 100 cm)

Thus the height will be 9.28 m.

OverLord2011 [107]2 years ago

3 0

Answer:

9.29x10^-3m

Explanation:

Step 1:

Data obtained from the question. This includes:

Density (ρ) = 0.879g/cm3

Pressure (P) = 0.790 atm

Height (h) =?

Step2:

Conversion to appropriate units. This is very vital in order to obtain the answer to the question in the desired unit.

For density:

1g/cm3 = 1x10^6g/m3

Therefore, 0.879g/cm3 = 0.879x1x10^6 = 879000g/m3

For pressure:

1 atm = 101325N/m2

Therefore, 0.790 atm = 0.790x101325 = 80046.75N/m2

Step 3:

Determination of the height

Pressure is related to height according to the following equation:

Pressure = Density x acceleration due to gravity x height

P = ρgh

P = 80046.75N/m2

ρ = 879000g/m3

g = 9.8m/s2

h =?

80046.75 = 879000 x 9.8 x h

Divide both side by 879000 x 9.8

h = 80046.75 / (879000 x 9.8)

h = 9.29x10^-3m

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Answer:

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Explanation:

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-) $CO_2$

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-) $CH_3Cl$

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2 years ago

When you apply heat energy to a substance, where does the energy go? Think about the law of conservation of energy.

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2 years ago

0.45 g of hydrated sodium carbonate crystals were heated until 3.87 of anhydrous power remained.

snow_tiger [21]

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<h3>Further explanation</h3>

Hydrate is a compound that binds water (H₂O), usually in the form of crystals/ solids

If these compounds are dissolved in water or heated, the hydrates can decompose:

Example: X.YH₂O (s) → X (aq) + YH₂O (l)

The formula for the hydrated compound contains: YH2O

The mole ratio shows the ratio of the coefficients of the hydrate compound

10.45 hydrated sodium carbonate(Na₂CO₃.xH₂O) were heated until 3.87 of 3.87of anhydrous (Na₂CO₃) remained, so

mass H₂O released :

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Answer:

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In this case:

Ptotal=Pnitrogen + Poxygen + Pcarbondioxide

You know that:

Ptotal= 0.998 atm
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Replacing:

0.998 atm=0.770 atm + 0.198 atm + Pcarbondioxide

Solving:

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$Pcarbondioxide=\frac{0.03 atm*760 mmHg}{1 atm}$

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The partial pressure of carbon dioxide is 22.8 mmHg

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