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lorasvet [3.4K]
2 years ago
9

Which of the following molecules is non polar? A.HF. B.HCN. C.NH3. D.CF4

Chemistry
1 answer:
torisob [31]2 years ago
8 0

Answer:

D. CF4 is non polar.

Explanation:

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A substance is tested in a lab. It is found to maintain a unique shape and is a good conductor of electricity. If it is made up
antoniya [11.8K]

Answer is: solid.

There are five fundamental states of matter (gas, liquid, solid, plasma and Bose–Einstein condensate).

In solid, molecules are closely packed, stiff and do not changes of shape or volume. Solid object (for example iron) does not take on the shape of its container.

Liquids have definite volume, but no fixed shape.

Gases (for example nitrogen and neeon) not have definite volume and fixed shape, it depends on its container.

Plasma is a an ionised gas with highly electrical conductivity.

6 0
3 years ago
Read 2 more answers
What effects can occur when heat energy is added to a system? Select all that apply. a. increase in temperature
zalisa [80]
<span>a. increase in temperature 
</span><span>d. phase change

Hope this helps!</span>
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2 years ago
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What is oxidized and what is reduced <br> C2H4 + 2O2 → 2CO + 2H2O<br> C2H4 + 3O2 → 2CO2 + 2H2O
Anika [276]

C2H4 is oxidized and O2 is reduced in both reactions.

<h3>What is oxidation/reduction?</h3>

Oxidation is defined in several ways. Some of the definitions are:

  1. The addition of oxygen or removal of hydrogen
  2. Increase in the oxidation number of atoms
  3. Addition of electronegative or the removal of electropositive elements

Reduction, on the other hand, is defined as:

  1. Removal of oxygen or addition of hydrogen
  2. Decrease in the oxidation number of atoms
  3. Addition of electropositive elements or the removal of electronegative elements.

In the two reactions, oxygen is being added to C2H4. Thus, C2H4 is being oxidized.

The oxidizing agent is O2. In oxidation reactions, the oxidizing agents usually get reduced. Thus, O2 is reduced in both reactions.

More on oxidation and reduction can be found here: brainly.com/question/3867774

#SPJ1

7 0
1 year ago
When the procedure calls for making a more dilute solution of an acid, or mixing an acid with other solutions, what is the corre
Fed [463]

Answer:

The correct order it b. always add acid last.

Explanation:

Adding acid first could result on a violent reaction and heat or fumes can be generated. The best approach is to always add all the water or non-acid component first, or add a significant portion before adding the acid slowly to the mixture.

7 0
3 years ago
Help me please i need it for homework i cant seen to solve the answer :((
strojnjashka [21]
Bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
7 0
2 years ago
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