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3 years ago

Which statement about concentration cells is correct?

Chemistry

2 answers:

Annette [7]3 years ago

7 0

Answer:

The answer is D. The concentrations are different and the reactions are different, so the cell potential is 0.00 volts.

Explanation:

A concentration cell is an electrolytic cell that is comprised of two half-cells with the same electrodes, but differing in concentrations. A concentration cell acts to dilute the more concentrated solution and concentrate the more dilute solution, creating a voltage as the cell reaches an equilibrium.

Marrrta [24]3 years ago

7 0

Answer:

The answer is: D. The concentrations are different and the reactions are different, so the cell potential is 0.00 volts.

Explanation:

The membrane potential is the difference in potential on both sides of a membrane that separates two solutions of different ion concentration, such as the cell membrane that separates the inside and outside of a cell.

The answer is: D. The concentrations are different and the reactions are different, so the cell potential is 0.00 volts.

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A rigid cylinder is filled with 100 mL of nitrogen gas at 25°C and a pressure of 1.00 atm. What will the pressure of the gas be

Ostrovityanka [42]

4 atm
100mL *1 atm= 25mL*Pressure

6 0

3 years ago

Convert 0.00763 nL to L

Reptile [31]

Answer:

$7.63\cdot10^{-12} L$

Explanation:

Conversion problems could be solved using dimensional analysis for convenient use and understanding. Dimensional analysis is a technique of multiplying the measure we have by a fraction corresponding to some two equal measures in different units.

In order to apply dimensional analysis here, we firstly need to know that a prefix 'n' stands for 'nano', and nano means $10^{-9}$ . In this case, we have nanoliters. Using the prefix, we can find a relationship between nanoliter and liter:

$1 nL = 10^{-9} nL$

We may now apply dimensional analysis. Since we wish to convert into liters, we'll be multiplying the number we have in nL by a fraction that contains this relationship with liters in the numerator and nanoliters in the denominator, so that nL terms cancel out and we would obtain the final answer in liters:

$0.00763 nL\cdot \frac{10^{-9} L}{1 nL}=7.63\cdot10^{-12} L$

6 0

3 years ago

1. list at least two possible sources of error from the experiment. would these errors result in an overestimation or an underes

quester [9]

An error in estimation could arise owing to;

1) Inaccurate measurement of the volumes of the solutions

2) When the reaction vessels are not properly cleaned

<h3>What is error in an experiment?</h3>

Error could occur in an experiment when values are misread. The error could be random error or a systematic error.

The major ways in which an error can occur in the estimation of concentration of acetic acid in the vinegar are;

1) Inaccurate measurement of the volumes of the solutions

2) When the reaction vessels are not properly cleaned

Learn more about errors in experiment:brainly.com/question/14149934

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2 years ago

How many 1-cm cubes would it take to construct a cube that is 4 cm on edge? Express your answer using two significant figures.

Firlakuza [10]

Answer:

It would take 64 1-cm cubes to construct a 4-cm cube.

Explanation:

The volume of a cube is equal to the edge raised to the power of 3.

A 1-cm edge cube has a volume of V₁ = (1 cm)³= 1 cm³

A 4-cm edge cube has a volume of V₄ = (4 cm)³= 64 cm³

The number of small cubes required to fill the same volume than the big cube is:

$\frac{V_{4}}{V_{1}} =\frac{64 cm^{3} }{1cm^{3} } =64$

7 0

4 years ago

The half-life of a specific element was calculated to be 5,200 years. What percentage of a sample of the pure element will remai

Snezhnost [94]

25% is the answer to the question

7 0

4 years ago

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