Why doors and windows are harder to close in the summer then in winter

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Ludmilka [50]

Answer:

Question 1 :

• A compound is ionic if it is made up of a metal or a cation (+) and a non metal or anion (-)

Question 2 :

• While naming ionic compounds, follow the formula → "metal" + "non-metal ending with ide "

• i.e; Sodium Chloride:

${ \rm{Na {}^{ + } _{(aq)} + Cl {}^{ - } _{(aq)} \: \dashrightarrow \: NaCl _{(aq)}} \: \: \: \: \: \: \: \: } \\ { \rm{sodium + chloride \: \dashrightarrow \: sodium \: chloride}}$

Question 3 :

• The answer above that question is perfect.

Question 4 :

1 atom → Mono. But it is highly recommended to ignore it

2 atoms → DI

3 atoms → TRI

4 atoms → TETRA

5 atoms → PENTA ( such as pentaoxide )

7 atoms → HEPTA ( such as heptaoxide )

Question 5 and 6:

Are perfectly answered.

5 0

3 years ago

Which of the following statement is true?

Svetradugi [14.3K]

Answer:

a. The resonance effect of the hydroxyl group stabilizes the anionic intermediate

Explanation:

The resonance effect stabilizes the the charge through the delocalization of the pi bonds. The resonance stabilization mainly occurs in the conjugated pi systems.

For example, phenol forms a strong hydrogen bonds than the nonaromatic alcohols as the $O_2-H_2$ dipole present in the hydroxyl group is being stabilized by the presence of the aromatic ring of phenol.

Thus the resonance effect of the hydroxyl group stabilizes the anionic intermediate.

4 0

3 years ago

What is an isotope? Give an example (use the full name! Simply listing the element is not a correct answer!)

Alina [70]

Answer:

Isotopes are variations of chemical elements that have the same number of protons but different number of neutrons.

Explanation:

3 0

3 years ago

If 20.00 moles of KClO3 react, how many molecules of O2 will form?

Tanzania [10]

Answer:

Explanation:

2KClO₃ = 2KCl + 3O₂

2 moles of potassium chlorate gives 3 moles of oxygen gas

20 moles of potassium chlorate will give 30 moles of oxygen gas .

30 moles of oxygen = 30 x 6.02 x 10²³ molecules of oxygen .

= 180.6 x 10²³ molecules of O₂ .

6 0

3 years ago

In which of these systems is the entropy decreasing?

Delicious77 [7]

"A gas condensing to a liquid" is the one system among the following choices given in the question where the entropy is decreasing. The correct option among all the options that are given in the question is the fourth option or option "D". I hope that this is the answer that has come to your desired help.

8 0

4 years ago