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3 years ago

Who has the most sensitive taste buds? the elderly adults babies teenagers

Chemistry

1 answer:

Molodets [167]3 years ago

3 0

Answer:

babies have the most sensitive taste buds

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What mass of cu(s)cu(s) is electroplated by running 14. 5 aa of current through a cu2 (aq)cu2 (aq) solution for 4. 00 hh?

galina1969 [7]

The mass of Copper electroplated is 68.76 g

<h3>What is electroplating?</h3>

The process of plating a metal onto another is known as electroplating.

It is often used to prevent corrosion of metal or for the decorative purposes

In this process, electric current is passed through an aqueous solution containing dissolved cations.

The dissolved cations are reduced developing a thin metal coating on the electrode.

At cathode,

$Cu^{2+}(aq) + 2e^-\rightarrow Cu(s)$

Current, I = 14.5 A

Time, t = 4 hrs = 4×60×60 = 14400 sec

Charge, q = It = 14.5×14400= 208800 C

Copper metal deposited by 2×96487 C = 63.55 g

Copper metal deposited by 208800 C = $\frac{63.55 \times208800}{2\times96487}$

= 68.76g

Hence, The mass of Copper electroplated is 68.76 g

Learn more about electroplating:

brainly.com/question/22104403

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4 0

2 years ago

Read 2 more answers

Express the result of the following calculation in scientific notation: 0.0263 cm2÷ 88.2 cm

VikaD [51]

<u>Answer:</u> The result of the given calculation is $2.98\times 10^{-4}cm$

<u>Explanation:</u>

Scientific notation is defined as the notation in which a number is expressed in the decimal form. This means that the number is always written in the power of 10 form.

We are given an expression:

$\Rightarrow \frac{0.0263cm^2}{88.2cm}$

The operation carried out in the above expression is division operation. The units are also treated in the same way.

The solution for the above expression is:

$\Rightarrow \frac{0.0263cm^2}{88.2cm}=0.000298cm$

The value in scientific notation is $2.98\times 10^{-4}cm$

Hence, the result of the given calculation is $2.98\times 10^{-4}cm$

3 0

4 years ago

Describe a polyhydroxyl alcohol.

Mademuasel [1]

With a name like poly hydroxyl alcohol, it suggests that the alcohol has more than one alcohol group. Thus any alcohol with more than one hydroxyl is a polyhydroxyl alcohol. An example that pops into mind is ethanediol (CH2OHCH2OH) this has 2 hydroxyl groups and is an alcohol, thus a polyhydroxyl alcohol

8 0

3 years ago

Which of the following is a scientific law?

9966 [12]

The answer is c hope this helps thanks

3 0

4 years ago

a rectangular solid of unknown density is 5 meters long, 2 meters high, and 4 meters wide. The mass of this solid is 300 grams.

Lostsunrise [7]

Answer:if you could be more spesific id be happpy to help

Explanation:

thanks sm.