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3 years ago

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A 0.229-g sample of an unknown monoprotic acid is titrated with 0.112 m naoh. the resulting titration curve is shown here. part

a determine the molar mass of the acid. express your answer using two significant figures.

1 answer:

Kazeer [188]3 years ago

4 0

It would be 0.341 because if you add 0.229 and 0.112 it will be 0.341

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What volume of air is needed to burn completely 100cm of propane?

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Answer:

See below

Explanation:

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100 gm / 44 gm / mole = 2.27 moles

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= 11.36 moles of oxygen

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Use the given data at 500 K to calculate ΔG°for the reaction

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Answer : The value of $\Delta G^o$ for the reaction is -959.1 kJ

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$2H_2S(g)+3O_2(g)\rightarrow 2H_2O(g)+2SO_2(g)$

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where,

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

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where,

$\Delta S^o$ = entropy of reaction = ?

n = number of moles

$\Delta S_f^0$ = standard entropy of formation

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

$\Delta S^o=[2mole\times (189J/K.mol)+2mole\times (248J/K.mol)}]-[2mole\times (206J/K.mol)+3mole\times (205J/K.mol)]$

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Now we have to calculate the Gibbs free energy of reaction $(\Delta G^o)$ .

As we know that,

$\Delta G^o=\Delta H^o-T\Delta S^o$

At room temperature, the temperature is 500 K.

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$\Delta G^o=-959100J=-959.1kJ$

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3 years ago

How does adding an atom affect the position of existing atoms or lone pairs?

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3 years ago

Read 2 more answers

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Butoxors [25]

$\huge{ \underline{ \boxed{ \bf{ \green{Answer:}}}}}$

Inside the stomach, Hydrochloric acid kills micro-organisms in the food. Stomach juices begin to break down <u>proteins</u> to amino acids.

✤ So, Fill the blank with proteins.

<h3><u>Explanation:-</u></h3>

Inside the stomach, the digestion of proteins starts due to the action of pepsin enzyme.
But this enzyme remains inactive and is activated by the Hydrochloric acid(HCl).
The Hydrochloric acid also helps in killing the germs and microbes which entered along with food.
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<u>━━━━━━━━━━━━━━━━━━━━</u>

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Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

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3 years ago