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Which of the following compounds has only one atom of carbon?

frez [133]

<h3>Answer: CO2</h3>

Explanation:

Well C2H6 there are 2 carbon and 6 hydrogen atoms

and having no number on the right of the letter means there is only one atom

8 0

3 years ago

Which of these gives a correct trend in ionization energy

natita [175]

Answer:

C. I, III , IV

Explanation:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

3 0

3 years ago

Which of these energy resources are renewable? Select all that apply.

xz_007 [3.2K]

The correct options are option B and D, that is, wind power and geothermal energy.

The form of energy which is gathered from renewable resources is known as renewable energy. This form of energy gets restocked on a human timescale like wind, sunlight, tides, waves, rain, and geothermal heat.

Renewable energy usually provides energy in four essential fields, that is, air and water heating/cooling, electricity generation, rural energy services, and transportation.

4 0

3 years ago

Read 2 more answers

an airplane is carrying 3 passengers to san Francisco. the plane is 3000 m in the air. if the PE of the plane and passengers is

Stella [2.4K]

15 I’m pretty sure yes it is

7 0

3 years ago

Be sure to answer all parts. identify a, b, and c, intermediates in the synthesis of the five-membered ring called an α−methylen

Vanyuwa [196]

The complete reaction along with intermediates is given below, with each step highlighted in different color.

Step 1:
In this step an acidic proton at alpha position is abstracted from lactone moiety and corresponding enolate is formed, which is resonance stabilized. Both structures are shown. In this case LDA (<span>Lithium diisopropylamide) acts as a base.
</span>
Step 2:
The enolate formed attacks on Methyl Iodide, as Iodide being greater in size is a good leaving group and alpha methyl moiety is generated.

Step 3:
This step is acid catalyzed Bromination. Bromine is added at alpha position.

Step 4:
This is elimination reaction and is according to <span>Hofmann's Rule. Here less substituted alkene is generated.</span>

7 0

4 years ago