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AnnZ [28]
3 years ago
7

Elements which have high electronegativities occur in Group: IA IIA VIIA O​

Chemistry
1 answer:
Naddik [55]3 years ago
7 0
The answer is... IA

PLEASE MARK BRAINLIEST
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How many carbon atoms are represented by the model below<br><br> A) 0<br> B) 3<br> C) 2<br> D) 1
Bogdan [553]

Answer:

Option (B) 3.

Explanation:

In the model represented above, the two extreme represent carbon atoms since no other group are attached to it. The joint at the middle also represent carbon atom.

Thus, we can write a more simplify illustration for the model above as

C—C—C

From the above illustration, we can see that the model contains 3 carbon atom.

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2 years ago
Which of the following equations is correct for coffee-cup calorimeter?
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The equation that is correct for coffee-cup calorimeter is q reaction = -q calorimeter. Details about coffee-cup calorimeter.

<h3>What is a calorimeter?</h3>

A calorimeter is an apparatus for measuring the heat generated or absorbed by either a chemical reaction, change of phase or some other physical change.

A coffee-cup calorimeter is a specific type of calorimeter that involves the absorption of heat of a reaction by water when a reaction occurs.

The enthalpy change of the reaction is equal in magnitude but opposite in sign to the heat flow for the water:

qreaction = -(qwater)

Therefore, the equation that is correct for coffee-cup calorimeter is q reaction = -q calorimeter.

Learn more about coffee-cup calorimeter at: brainly.com/question/27828855

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3 0
1 year ago
How is coal formed and why is it considered a nonrenewable resource? (Site 1)
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Coal is formed under the ground when pressure is high and there is a lot of heat also to make coal you need dead and composed organisms put together all of this makes a lump of dark coal.

Explanation:

6 0
3 years ago
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Question 3 When the population size decreases over time, the total number of births the total number of deaths. O less than O eq
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The population decreases when the birth rate is less than the death rate.
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Answer:

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