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ElenaW [278]
3 years ago
7

NEED HELP ASAP LAST QUESTION CANT GET WRONG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
yaroslaw [1]3 years ago
8 0

A local community needs to provide more electricity for its growing population. Currently, the community's electricity needs are met by coal-burning power plants several kilometres away. Citizens are concerned that burning more coal will produce too much air pollution.

Which of the following could be used as an alternative energy resource to help minimise air pollution in this community?

A.  hydroelectric energy

B.  solar energy

C.  wind energy

<u>D.   all of these </u>

<u />

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What is the current in 160V current if the resistance is 20
Karo-lina-s [1.5K]

Answer:

Current, I = 8 A

Explanation:

We have,

Voltage, V = 160 V

Resistance, R = 20 ohms

It is required to find the current. The relation between current, voltage and resistance is called Ohm's law. It is given as :

V=IR

I = current

I=\dfrac{V}{R}\\\\I=\dfrac{160}{20}\\\\I=8\ A

So, the value of current is 8 A.

7 0
3 years ago
Mammals and plants do not belong in the same domain. <br><br> Fact: <br><br> Evidence:
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False

Fact: Mammals and plants belong to the same domain, the Eukarya domain.

Evidence :All the organisms that possess a eukaryotic cell, plants, animals, protists, and fungi are in the Eukarya domain.

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3 years ago
What is the difference between conjugate acid-base pair?
NeX [460]

Answer:

B. a H+ ion is the answer dear.

Explanation:

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5 0
3 years ago
What are the answers for this question<br> Don't just answer for points
Kisachek [45]

Answer:

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5 0
3 years ago
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What is the correct iupac name of CH3-CH2-CH2CHO ?
kow [346]

the correct IUPAC name of the compound is 1-Butanal.

<h3>What are IUPAC names?</h3>

It is a system of naming organic compounds based on the longest carbon-to-carbon single bonds. It does not matter whether these longest chains are continuous or in a ring.

Thus, when the compound with the chemical formula, CH3-CH2-CH2CHO is considered. The longest carbon-to-carbon chain is 4. The 1st carbon carries a functional group known as an aldehyde.

Aldehydes are equipped with the carbonyl group and have the general formula R−CH=O. They are also sometimes referred to as formyl.

Aldehydes are named after their parent alkane chains with a slight modification. The 'e' is replaced with 'al'

The aldehyde in this case has four carbons. This means that the parent alkane is Butane. Therefore, the name of the compound will be 1-Butanal.

More on IUPAC names can be found here: brainly.com/question/16631447

#SPJ1

4 0
2 years ago
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