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3 years ago

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Chemistry

2 answers:

ValentinkaMS [17]3 years ago

8 0

Answer: ...

Explanation:

Anna007 [38]3 years ago

3 0

I don’t know if its just me but i can’t see the picture, im so sorry :(

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The vapor pressure of ethanol is 400 mmhg at 63.5°c. its molar heat of vaporization is 39.3 kj/mol. what is vapor pressure of et

SVETLANKA909090 [29]

Answer:- The pressure of ethanol would be 109 mmHg.

Solution:- This problem is based on Clausius clapeyron equation--

$ln(\frac{P_1}{P_2})=(\frac{\Delta Hvap}{R})(\frac{1}{T_2}-\frac{1}{T_1})$

Given, $T_1$ = 63.5 + 273 = 336.5 K

$T_2$ = 34.9 + 273 = 307.9 K

$P_1$ = 400 mmHg

$P_2$ = ?

$\Delta Hvap$ = 39.3 kJ/mol = 39300 J/mol

R = 8.314 J/mol.K

Let's plug in the values in the equation and do the calculations.

$ln(\frac{400}{P_2})=(\frac{39300}{8.314})(\frac{1}{307.9}-\frac{1}{336.5})$

$ln(\frac{400}{P_2})$ = 1.30

On taking anti ln to both sides...

$\frac{400}{P_2}$ = $e^1^.^3^0$

$\frac{400}{P_2}$ = 3.67

$P_2$ = 400/3.67

$P_2$ = 109 mmHg

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3 years ago

Is an insoluble solid that forms from two solution?

Mnenie [13.5K]

Precipitation reactions are those reactions in which two aqueous solutions, when mixed, react to form a solid. The solid thus formed is known as a precipitate. Thus, a precipitate is an insoluble solid (recall that an insoluble substance is one which does not dissolve). ... We have defined precipitates as insoluble solid

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3 years ago

Hydrogen has three isotopes with mass numbers of 1, 2, and 3 and has an average atomic mass of 1.00794 amu. This information ind

ki77a [65]

Answer:its actually 3 trust me

Explanation:

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3 years ago

Read 2 more answers

Write a balanced net ionic equation for the reaction of aqueous solutions of baking soda (NaHCO3) and acetic acid.(A) HCO3–(aq)

IgorC [24]

<u>Answer:</u> The correct answer is Option C.

<u>Explanation:</u>

Net ionic equation of any reaction does not include any spectator ions.

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

The chemical equation for the reaction of sodium bicarbonate and acetic acid is given as:

$NaHCO_3(aq.)+CH_3COOH(aq.)\rightarrow CH_3COONa(aq.)+H_2O(l)+CO_2(g)$

Ionic form of the above equation follows:

$Na^+(aq.)+HCO_3^-(aq.)+CH_3COO^-(aq.)+H^+(aq.)\rightarrow CH_3COO^-(aq.)+Na^+(aq.)+H_2O(l)+CO_2(g)$

As, sodium and acetate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation and are spectator ions.

The net ionic equation for the above reaction follows:

$HCO_3^-(aq.)+H^+(aq.)\rightarrow CO_2(g)+H_2O(l)$

Hence, the correct answer is Option C.

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3 years ago

During a nuclear reaction what is mass converted into

seraphim [82]

During nuclear reactions some mass might be converted into energy and some energy might be converted into mass

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4 years ago