Description of intensive property

2 answers:

8 0

An intensive property is a bulk property, meaning that it is a local physical property of a system that does not depend on the system size or the amount of material in the system.

valentina_108 [34]3 years ago

3 0

Answer: An intensive property is a property of matter that does not change as the amount of matter changes. It is a bulk property, which means it is a physical property that is not dependent on the size or mass of a sample. In contrast, an extensive property is one that does depend on sample size.

Explanation:

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A chemist prepares a solution of sodium thiosulfate by measuring out of sodium thiosulfate into a volumetric flask and filling t

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The question is incomplete, here is the complete question:

A chemist prepares a solution of sodium thiosulfate by measuring out 110. g of sodium thiosulfate into a 350. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium thiosulfate solution. Be sure your answer has the correct number of significant digits.

Answer: The concentration of sodium thiosulfate solution is 1.99 mol/L

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Given mass of sodium thiosulfate = 110 g

Molar mass of sodium thiosulfate = 158.1 g/mol

Volume of solution = 350 mL

Putting values in above equation, we get:

$\text{Molarity of sodium thiosulfate}=\frac{110\times 1000}{158.1\times 350}\\\\\text{Molarity of sodium thiosulfate}=1.99mol/L$

Hence, the concentration of sodium thiosulfate solution is 1.99 mol/L

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In which substance does phosphorus have a +3 oxidation state

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Options are as follow,

A. P₄O₁₀
B. PCl₅
C. Ca₃(PO₄)₂
D. KH₂PO₃

Answer;
The correct option is Option-D (KH₂PO₃).

Explanation:
Oxidation number of Phosphorous is calculated as,

As the normal oxidation number of K is +1, H is +1 and O is -2 so,

KH₂PO₃ = 0

0 shows that the molecule is neutral. Now puttion values of all elemnts except P,

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P = +3

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