1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lana66690 [7]
3 years ago
9

Pls I need help with these ques. help plsssssssssssssss

Chemistry
1 answer:
snow_lady [41]3 years ago
6 0

Answer:

q1..no.2 and 4 are aromatic

You might be interested in
How many protons and neutrons in the atom K-42
katovenus [111]
There are 20n nutrons in the atom k-42.
3 0
3 years ago
A molecule that has a central atom surrounded by three single bond pairs and one unshared pair would have a _____ shape
Fantom [35]
A molecule that has a central atom surrounded by three single bond pairs and one unshared pair would have a trigonal pyramidal shape. The electon arrangement of this is called tetrahedral. It involves one atom located at the apex and at the corners are three atoms with a trigonal base. An example would be ammonia or NH3. Nitrogen has five valence electrons so that it needs to three more electrons to satisfy the octet rule and be stable. It would share electrons with the three nitrogen present. In order, to achieve the most stable geometry, the three atoms of hydrogen would attach with a bond angle of 109 degrees.
6 0
3 years ago
Read 2 more answers
How many neutrons are in titanium
strojnjashka [21]

Titanium has an atomic number of 22, which means it has 22 protons and 22 electrons. About 73.8 percent of natural titanium exists as the isotope Ti-48, which contains 26 neutrons.

4 0
3 years ago
Which of the following statements holds true for a chemical change? In a chemical change, no new substance is formed. In a chemi
expeople1 [14]
<span>In a chemical change, the molecular structure of a substance changes. I think this is right. I hope this helps.</span>
8 0
3 years ago
Read 2 more answers
Tristearin and stearic acid are insoluble in water. However, sodium stearate (soap) is soluble. Why is there this difference in
kupik [55]

Explanation:

Sodium stearate , is the soap , it a ionic compound , hence , can easily break to cation and anion , and therefore is soluble in water .It works on the principle of micelle formation .

Tristearin and stearic acid are fatty acids , and have are carboxyl group and have a very huge hydrocarbon chain , making it non polar in nature ,hence is is insoluble in water , since , water is a polar molecule .

7 0
3 years ago
Other questions:
  • A 7.85 × 10-5 mol sample of copper-61 emits 1.47 × 1019 positrons in 90.0 minutes. what is the decay constant for copper-61
    12·1 answer
  • Heating oxygen difluoride gas yields oxygen gas and fluorine gas? Whats the balance chemical equation for this?
    6·1 answer
  • Write a balanced equation for the reaction between nitric acid and lithium carbonate .
    15·1 answer
  • Which statements below are an appropriate hypothesis in response to this question? Check all that apply. If a substance changes
    15·2 answers
  • Which of the following is the correct definition of radiant energy?
    15·2 answers
  • How many protons electrons and neutrons respectively does 29 CS have
    12·1 answer
  • How can a spinning ball have more lift than one that is not spinning?
    5·2 answers
  • 5
    9·1 answer
  • Changes between a liquid and gas exsample​
    9·1 answer
  • What contribution to atomic theory resulted from albert einstein’s work?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!