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3 years ago

Does percent error measure accuracy or precision? Explain.

Chemistry

1 answer:

Phoenix [80]3 years ago

5 0

Answer:

Accuracy

Explanation:

Accuracy is the nearness of measurement to true value.

Precision deals with the ability to be able to reproduce a set of result.

In calculating percentage error, we simply find the difference between the approximately measured value and the true value. We then divide by the true value and express as a percentage.

This percentage shows how much error was incurred in our expriment which did not yield the true value. An accurate result has a low percentage error.

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Match these items. 1. moles per liter of solution solute 2. spreading out Keq 3. substance being dissolved diffusion 4. general

Degger [83]

Answer:

1. moles per liter of solution - Molarity

2. spreading out - diffusion

3. substance being dissolved- solute

4. general equilibrium constant - Keq

5. the substance doing the dissolving in a solution - solvent

6. solubility product constant - Ksp

Explanation:

Number of moles of substance being dissolved in one liter of solution is defined as molarity

Solute is the substance which is dissolved and solvent is the substance into which the solute is dissolved. For example salt is solute and water is solvent.

Ksp defines the solubility product constant which indicates the equilibrium between a solid and solution and the number of ions of solid required to achieve this equilibrium.

Keq depicts the scenario where reactant and product concentrations are constant in a chemical reaction.

Hence, the correct match is

1. moles per liter of solution - Molarity

2. spreading out - diffusion

3. substance being dissolved- solute

4. general equilibrium constant - Keq

5. the substance doing the dissolving in a solution - solvent

6. solubility product constant - Ksp

8 0

4 years ago

Explain how impurities are selected for doping in group 14 semiconductors

aleksklad [387]

Impurities selection for doping in group 14 semiconductors is: based on their ability to add more holes and fewer electrons or to add more electrons and reduce the holes.

<h3>Meaning of Semiconductors</h3>

Semiconductors can be defined as any material that has the ability to exhibit some properties of a conductor and some properties of an insulator.

A semiconductor can be used as either a conductor or an insulator when worked upon.

In conclusion, Impurities selection for doping in group 14 semiconductors is: based on their ability to add more holes and fewer electrons or to add more electrons and reduce the holes.

Learn more about semiconductors: brainly.com/question/1918629

#SPJ1

6 0

2 years ago

Which of the following will reduce copper?<br> zinc<br> mercury<br> fluorine<br> chlorine

laiz [17]

Zinc because the only metals that would be able to reduce copper ions in solution would be hydrogen, lead, tin, nickel, iron, zinc, aluminum, Magnesium, sodium, calcium, potassium, and lithium. and according to your answer choices Zinc is the answer.

4 0

4 years ago

Read 2 more answers

Which statement best describes the relationship between the giraffe and the tree shown above?

Dominik [7]

Answer

Explanation:

the giraffe doesn't need carbon dioxide

8 0

3 years ago

What is the H+ concentration when pH is 2, 6, 7, 8, and 12?

Mariulka [41]

Answer:

See below.

Explanation:

pH = - log (H+)

So the pH of 1 x 10^-7 M solution is 7.

I'm sorry but I'm not sure about what the other units mean, so Im not sure of the answer to those.

If you convert the other units to the form 1 x 10^-n then the pH will be n.

6 0

3 years ago

Read 2 more answers