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Usimov [2.4K]
3 years ago
10

What Is Precision? The Degree Of Accuracy In A Measurement

Chemistry
1 answer:
Artemon [7]3 years ago
4 0

Answer:

Precision refers to how close two or more measurements are to each other, regardless whether those measurements are accurate or not.

Accuracy refers to how closely the measured value of a quantity corresponds to its “true” value.

Explanation:

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What three factors affect the biodiversity of an ecosystem
Korolek [52]
<span>Factors that affect biodiversity in an ecosystem include area,climate,diversity of niches,and keystone species.</span><span />
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Key terms: Reset Stereoisomers that are not mirror images of each are ____________ . The chemical and physical properties of two
sergejj [24]

Answer:

Enantiomers/ Isomers/ Stereoisomers/ Meso compounds/ Constitutional isomers/ Diastereomers.

Explanation:

Isomers are molecules that have the same chemical formula but have different conformation, or in its connections, or the orientation in space. Isomers have different chemical and physical properties (second blank).

The isomers that only differ by the orientation of their atoms in space are called stereoisomers (third blank).

The stereoisomers that have a chiral carbon and do not mirror images of each are called enantiomers (first blank). They can deviate the polarized light.

When a compound has two or more chiral carbons but they compensate for the deviation of the light, and the compound is optically inactive, it's called a meso compound (fourth blank).

When the isomers differ in the way the atoms are connected it's called a constitutional isomer (fifth blank).

When the molecule has more than one chiral carbon, it will have pairs of enantiomers. The isomers that aren't of the same pair are nonsuperimposable mirror images of each other and are called diastereomers (last blank).

6 0
3 years ago
What is acidic and base​
Arisa [49]

Answer:

there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic. A base is a substance that accepts hydrogen ions.

Explanation:

An acid is a substance that donates hydrogen ions. ... Now there are more hydrogen ions than hydroxide ions in the solution. This kind of solution is acidic. A base is a substance that accepts hydrogen ions. When a base is dissolved in water, the balance between hydrogen ions and hydroxide ions shifts the opposite way.

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3 years ago
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What is the different things that we have and animals?
Katen [24]

Answer:

the different things that we have and animals are.:

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4 0
3 years ago
Ab2 has a molar solubility of 3.72×10−4 m. what is the value of the solubility product constant for ab2?
Gekata [30.6K]
Solubility product constants are values to describe the saturation of ionic compounds with low solubility. A saturated solution is when there is a dynamic equilibrium between the solute dissolved, the dissociated ions, the undissolved and the compound. It is calculated from the product of the ion concentration in the solution. For the generic salt, AB2, the dissociation would  be as follows:<span>

AB2 = A2+ + 2B-

So, the expression for the solubility product would be:

Ksp = [A2+] [B-]^2
</span>Ksp = [x] [2x]^2 = 4x^3
<span>
where x = </span><span>3.72×10^−4 M
</span><span>
Ksp = </span>4( 3.72×10^−4 )^3
Ksp = 2.06x10^-10 M^3

The solubility product constant of AB2 would be 
Ksp = 2.06x10^-10 M^3.
4 0
3 years ago
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