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spayn [35]
3 years ago
7

Scientific inquiry attempts to search out, describe, explain, and predict things that happen in nature. Which of the following b

est describes how progress is made in scientific inquiry
Chemistry
2 answers:
alexdok [17]3 years ago
8 0
<span>By asking questions and collecting, analyzing, and interpreting data to answer them</span>
saw5 [17]3 years ago
6 0

Letter C because that's the right answer!!!!!

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Consider the voltaic cellZn(s) + Cu{2+}(aq)--&gt; Zn{2+}(aq)+Cu(s){}=chargeUnder standard conditions, what is the maximum electr
blondinia [14]

Answer:

Max. work done in 60 g of copper plated out is 200472.14 J

Explanation:

Given cell reaction is:

Zn(s)+Cu^{2+} \rightarrow Zn^{2+}+Cu(s)

Standard reduction potential of Zn electrode (E_{Zn^{2+}/Zn}) is 0.763 V.

Standard reduction potential of Cu electrode (E_{Cu^{2+}/Cu}) is -0.337 V.

Copper acts as cathode and Zinc acts as anode.

Cell potential (E) = E° cathode - E° anode

                           = 0.763 - (-0.337)

                           = 1.10 V

formula for the work done is as follows:

W_{max}=-nFE

Here, n is no. of electron involved in the reaction.

F(Faraday's constant) = 96500

In the given reaction, n = 2

W_{max}=-nFE\\=-2 \times\ 96500 \times 1.10\\=-212300\ J/mol

Therefore, 212300 J work is done by reducting 1 mol of copper.

Copper given is 60 g.

Molecular mass of copper is 63.54 g/mol.

No.\ of\ mol = \frac{60\ g}{63.54\ g/mol}

Max. work done in 60 g of copper plated out is:

W_{max}=212300\ J/mol \times \frac{60\ g}{63.54\ g/mol} \\=200472.14\ J

3 0
3 years ago
Find the Nazca plate and the South American plate. How are they different? Are they moving toward or away from each other?
Otrada [13]
<span>The Nazca plate is an oceanic plate, while the South American plate is continental. The fast moving Nazca plate is moving east towards the South American plate at a downward angle and converging. This process is called subduction, resulting in frequent earthquakes & production of the Andes Mountains.</span>
7 0
3 years ago
An individual picks up a cup and drinks from it. This is an example of __________.
Lesechka [4]

Answer:

A

Explanation:

The correct answer is: A) "A concentric contraction because muscles cause the elbow joint and arm to move"

6 0
3 years ago
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Which cohesive forces are the strongest in water?
jeyben [28]

When cohesive force is stronger than the adhesive force: concave up meniscus, water forms droplets on surface

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3 years ago
a prescriber has ordered childrens motrin 400 mg po q6h for a child who weighs 60 kg. how many mg/kg is the child receiving
DedPeter [7]

Answer:

6.67 mg/kg     per dose   ( 26.67 mg/kg   per day)

Explanation:

400 mg / 60 kg = 6 2/3  mg/kg  per dose

   per <em>DAY</em>  is  four times this number

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