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tangare [24]
3 years ago
15

Which property of a substance can be determined using a pH indicator?

Chemistry
2 answers:
satela [25.4K]3 years ago
7 0

Answer:A. Acidity

Explanation:

A pH value is determined from the negative logarithm of this concentration and is used to indicate the acidic,basic or neutral character of the substance you are testing

Amanda [17]3 years ago
6 0

Answer:b

Exbplanation:

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The density of mercury is 13.5 g/mL and the density of water is 1.00 g/mL. If a mercury barometer reads 677 mmHg, what is the ba
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The normal freezing point of a certain liquid
stepladder [879]

Answer : The molal freezing point depression constant of X is 4.12^oC/m

Explanation :  Given,

Mass of urea (solute) = 5.90 g

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Formula used :  

\Delta T_f=i\times K_f\times m\\\\T^o-T_s=i\times K_f\times\frac{\text{Mass of urea}\times 1000}{\text{Molar mass of urea}\times \text{Mass of X liquid}}

where,

\Delta T_f = change in freezing point

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\Delta T^o = freezing point of liquid X= 0.4^oC

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K_f = molal freezing point depression constant of X = ?

m = molality

Now put all the given values in this formula, we get

[0.4-(-0.5)]^oC=1\times k_f\times \frac{5.90g\times 1000}{60g/mol\times 450.0g}

k_f=4.12^oC/m

Therefore, the molal freezing point depression constant of X is 4.12^oC/m

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3 years ago
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2 years ago
39. Which bond is least polar?<br> A) As-C1<br> B) Bi-CI<br> C) P-CI<br> D) N-C1
garik1379 [7]

Answer:

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The electronegativity of the elements in Group 5 (N. P As and Bi) decreases as we go down the Group so N is the most electronegative and chlorine is less able to draw electrons away from N than from the other elements in Group 5.

3 0
3 years ago
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