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Anna71 [15]
3 years ago
7

14. The following are a list of the four parts of John Dalton's atomic theory Indicate which of

Chemistry
1 answer:
Damm [24]3 years ago
5 0

Answer:

1

all matter is made of tiny particles called atom

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A client with a long history of cigarette smoking and poorly controlled hypertension is
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It may be a hemorrhagic stroke because of the patient's history.

Explanation:

Uncontrolled hypertension could generate a hemorrhagic stroke within the brain generating the sign of progressive dementia, this is due to the vessel breaking due to the excess pressure of the internal light, it breaks and releases or extravases all the bloody contents to the brain

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HURRY NEED NOW! Calcium has a charge of +2. The chart lists the charges of different ions.
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The orbits astroids are found primarily between( )and( )
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What is the equilibrium partial pressure of water vapor above a mixture of 62.9 g H2O and 33.2 g HOCH2CH2OH at 55 °C. The partia
bija089 [108]

Answer : The partial pressure of H_2O is 102.3 mmHg.

Explanation :

As per question,

Mass of H_2O = 62.9 g

Mass of HOCH_2CH_2OH = 33.2 g

Molar mass of H_2O = 18 g/mole

Molar mass of HOCH_2CH_2OH = 62 g/mole

First we have to calculate the moles of H_2O and HOCH_2CH_2OH.

\text{Moles of }H_2O=\frac{\text{Mass of }H_2O}{\text{Molar mass of }H_2O}=\frac{62.9g}{18g/mole}=3.49mole

\text{Moles of }HOCH_2CH_2OH=\frac{\text{Mass of }HOCH_2CH_2OH}{\text{Molar mass of }HOCH_2CH_2OH}=\frac{33.2g}{62g/mole}=0.536mole

Now we have to calculate the mole fraction of H_2O and HOCH_2CH_2OH.

\text{Mole fraction of }H_2O=\frac{\text{Moles of }H_2O}{\text{Moles of }H_2O+\text{Moles of }HOCH_2CH_2OH}=\frac{3.49}{3.49+0.536}=0.867

\text{Mole fraction of }HOCH_2CH_2OH=\frac{\text{Moles of }HOCH_2CH_2OH}{\text{Moles of }H_2O+\text{Moles of }HOCH_2CH_2OH}=\frac{0.536}{3.49+0.536}=0.134

Now we have to partial pressure of H_2O.

According to the Raoult's law,

p^o=X\times p_T

where,

p^o = partial pressure of water vapor

p_T = total pressure of gas

X = mole fraction of water vapor

p_{H_2O}=X_{H_2O}\times p_T

p_{H_2O}=0.867\times 118.0mmHg=102.3mmHg

Therefore, the partial pressure of H_2O is 102.3 mmHg.

3 0
3 years ago
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