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emmasim [6.3K]
4 years ago
11

Match the following terms with their definitions:

Chemistry
2 answers:
pogonyaev4 years ago
7 0

Explanation:

A mixture is defined as a substance in which two or more components are mixed together. Components in a mixture do not chemically combine together.

For example, sugar in water.

When solute particles completely and evenly mixed in a solvent then it is known as a homogeneous mixture. A homogeneous mixture is also known as a solution. For example, salt in water.

When solute particles are not evenly mixed in a solvent then it is known as a heterogeneous solution. For example, sand in water.

A compound is a substance in which two or more atoms are chemically combined together in a fixed ratio by mass. For example, CaCl_{2} is a compound.

Thus, we can conclude that given terms with their definitions are matched as follows.

1. Matter that is physically combined; has two forms of itself (homogeneous and heterogeneous) - Mixture.

2. A substance that that has uniform composition of two or more substances that cannot be seen - homogeneous mixture.

3. A substance that that has non-uniform composition of two or more substances that can be seen - heterogeneous mixture.

4. Substance composed of two or more elements bonded in a certain ratio by mass - Compound.

5. An example of a homogeneous mixture in a liquid form - solution.

stepan [7]4 years ago
6 0
Hi,

Homogeneous mixture 2
Heterogeneous 3
Mixture 1
Solution 5
Compound 4
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25 mM Tris HCl and 0.1% w/v SDS

Explanation:

A <em>10X solution</em> is ten times more concentrated than a <em>1X solution</em>. The stock solution is generally more concentrated (10X) and for its use, a dilution is required. Thus, to prepare a buffer 1X from a 10X buffer, you have to perform a dilution in a factor of 10 (1 volume of 10X solution is taken and mixed with 9 volumes of water). In consequence, all the concentrations of the components are diluted 10 times. To calculate the final concentration of each component in the 1X solution, we simply divide the concentration into 10:

(250 mM Tris HCl)/10 = 25 mM Tris HCl

(1.92 M glycine)/10 = 0.192 M glycine

(1% w/v SDS)/10 = 0.1% w/v SDS

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