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3 years ago

At what temperature is the boiling point of this substance

Chemistry

2 answers:

mixas84 [53]3 years ago

4 0

That would be 100 degrees C or 212 F

Anna007 [38]3 years ago

3 0

Answer: Option (c) is the correct answer.

Explanation:

Boiling point is defined as the temperature at which vapor pressure of a liquid becomes equal to the vapor pressure of its surrounding atmosphere.

In the given graph, boiling point of given substance is at 120 degree celsius.

And the horizontal line at 120 degree celsius shows that the liquid and vapor form of substance are in equilibrium with each other.

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What quantity is represented by the metric system prefix deci-?

blagie [28]

The answer would be <span>0.1 hope i helped you out :)</span>

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3 years ago

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Calculate the concentration of OH in a solution that contains 3.9 10-4 M H30 at 25°C. Identify the solution as acidic, basic or

Norma-Jean [14]

Answer:

Option A) 2.6 × 10⁻¹¹ M, acidic.

Explanation:

The ion-product constant of water $K_{\rm w}$ gives a relationship between $\rm [H_3O^{+}]$ and $\rm [OH^{-}]$ :

$K_{\rm w} = \rm [H_3O^{+}]\cdot [OH^{-}]$ .

The exact value of $K_{\rm w}$ depends on the temperature. Under $\rm 25^{\circ}C$ , $K_{\rm w} \approx 1^{-14}$ .

The question states that $\rm [H_3O^{+}] = 3.9\times 10^{-4}\; M$ . As a result,

$\begin{aligned} {\rm [OH^{-}]} &= \frac{K_{\rm w}}{[{\rm H_3O^{+}}]}\\ &\approx\frac{1^{-14}}{3.9\times 10^{-4}} && \rm {\leftarrow Only~under~25^{\circ}C.}\atop{}\\&\approx \rm 2.6\times 10^{-11}\; M\end{aligned}$ .

A solution is acidic if $\rm [H_3O^{+}] > [OH^{-}]$ .
A solution is neutral if $\rm [H_3O^{+}] = [OH^{-}]$ .
A solution is acidic if $\rm [H_3O^{+}] < [OH^{-}]$ .

$\rm [H_3O^{+}] > [OH^{-}]$ for this solution. As a result, this solution is acidic.

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3 years ago

Sodium bicarbonate is used to neutralize the remaining HCl at the end of the reaction. The initial products of this reaction are

V125BC [204]

Answer:

Kindly check explanation section.

Explanation:

Since, the question requires the chemical reaction to be written in lewis for the the processes involved in this particular Question/problem that is to say the neutralization process and the decomposition process. The lewis structure is given in the attached picture.

For the first process; Sodium bicarbonate reacts with HCl to produce the carbonic acid and a salt, known as Sodium chloride.

Na2CO3 + 2HCl ----------> 2NaCl + H2CO3.

The second process shows the decomposition of Carbonic acid into carbon dioxide and water.

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3 years ago

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Katen [24]

Answer:

1. balanced

2. balanced

3. unbalanced

4. balanced

5. balanced

6. unbalanced

7. balanced

8. unbalanced

Explanation:

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3 years ago

Most molecules in life are made up of complex molecules based around which of the following type of atoms?

Reika [66]

Answer:

Carbon is the answer. hope that helped

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3 years ago