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
Margaret [11]
3 years ago
8

Which of the following elements exist naturally as a covalently bonded molecule?

Chemistry
1 answer:
mr Goodwill [35]3 years ago
4 0
I think that it's D.
You might be interested in
Among the gases listed, which would have the fastest rate of effusion?
Delvig [45]
"CH4" is the one gas among the choices given in the question that <span>would have the fastest rate of effusion. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has actually come to your great help.</span>
3 0
3 years ago
Read 2 more answers
In an exothermic reaction, chemical energy is converted to
12345 [234]

Answer:molten iron

Explanation:releases heat and light into surroundings

7 0
3 years ago
What is the pH of a 0.28 M solution of ascorbic acid
Nady [450]

Hey there!

Values Ka1 and Ka2 :

Ka1 => 8.0*10⁻⁵

Ka2 => 1.6*10⁻¹²

H2A + H2O -------> H3O⁺  + HA⁻

 Ka2 is very less so I am not considering that dissociation.

Now Ka = 8.0*10⁻⁵ = [H3O⁺] [HA⁻] / [H2A]

lets concentration of H3O⁺  = X then above equation will be

8.0*10−5 = [x] [x] / [0.28 -x

8.0*10−5 = x² /  [0.28 -x ]

x² + 8.0*10⁻⁵x  - 2.24 * 10⁻⁵

solve the quardratic equation

X =0.004693 M

pH = -log[H⁺]

pH = - log [ 0.004693 ]

pH = 2.3285

Hope that helps!

3 0
3 years ago
In a fluorine atom, on which energy level are the valence electrons found?
aivan3 [116]

Answer:

second energy level

Explanation:

Valence electrons are those electrons which are present in outer most orbital of the atom.

This can be easily found through the electronic configuration of atom.

Electronic configuration of F:

F₉ = 1s² 2s² 2p⁵

We can see that the valence electrons are present in second energy level of F atom.

There are seven valence electrons of fluorine.

It is called halogens.

Halogens are very reactive these elements can not be found free in nature. Their boiling points also increases down the group which changes their physical states. i.e fluorine is gas while iodine is solid.

Fluorine:

1. it is yellow in color.

2. it is flammable gas.

3. it is highly corrosive.

4. fluorine has pungent smell.

5. its reactions with all other elements are very vigorous except neon, oxygen, krypton and helium.  

6 0
3 years ago
What causes the
attashe74 [19]
DNA
sorry if it’s wrong, but that answer seems reasonable
3 0
3 years ago
Other questions:
  • Can you answer the following questions with work, please?A) The conversion of glucose-6-phosphate to fructose-6-phosphate is cat
    12·1 answer
  • Help me if you can please help me please​
    8·2 answers
  • Which pair of ions can form an ionic bond with each other and why? A.Cu and Ag; They are both metal ions.B. S and O; They have l
    9·2 answers
  • What mass of a 0.583 molar solution of iron(III) nitrate is needed to obtain a) 0.0200 moles of iron(III) nitrate, b) 0.0500 mol
    12·1 answer
  • Hi can u help me pls? I'm totally stuck . The natural source of acidity in rain water is _____.
    6·1 answer
  • Which drug presents the greatest challenges to forensic science
    5·1 answer
  • Select the correct answer. How can technology negatively impact a guest’s perception of a restaurant? A. The POS system helps th
    15·2 answers
  • 24.3 2 An artifact classified as seeds, found in a site at Newlands Cross, Ireland, is found to have a 14C radioactivity of 0.10
    6·1 answer
  • Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54​
    15·1 answer
  • HELP ME ON THIS
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!