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
lina2011 [118]
3 years ago
7

How many electrons are there in carbonate ion, CO3^-2?

Chemistry
1 answer:
NISA [10]3 years ago
3 0
It should be 24 electrons
You might be interested in
Rank the following transitions in a hydrogen atom in order of increasing wavelength of electromagnetic radiation that could prod
Dmitrij [34]

Answer:

n=2 to n=4 < n=6 to n=8 < n=10 to n=12 < n=14 to n=16

Explanation:

According to Neils Bohr, electrons in an atom are found in specified energy levels. Transitions are possible from one energy level to another when the electron receives sufficient energy usually in the form of a photon of electromagnetic radiation of appropriate frequency and wavelength. The energy of this photon corresponds to the energy difference between the two energy levels. Thus the higher the energy difference between energy levels, the greater the energy of the photon required to cause the transition and the shorter the wavelength of the photon.

High energy photons have a very short wavelength. It should be noted that as n increases, the energy of successive energy levels decreases and transitions between them now occurs at longer wavelengths. Hence, the highest energy and shortest wavelength of photons are required for transition involving lower values of n because such electrons are closer to the nucleus and are more tightly bound to it than electrons found at a greater distance from the nucleus.

Hence transition involving electrons at higher energy levels occur at a longer wavelength compared to transition involving electrons closer to the nucleus. This is the basis for the arrangement of wavelengths required to effect the various electronic transitions shown in the answer.

3 0
3 years ago
The part of the flower responsible for producing pollen (sperm) is the _______.
IgorC [24]
Hello,

Here is your answer:

The proper answer to this question is option C "stigma".

Here is how:

The stigma is responsible for producing pollen in a plant.

Your answer is C.

If you need anymore help feel free to ask me!

Hope this helps!
7 0
3 years ago
I don't get it<br> Is a Flubber solid, liquid or gas?
Marianna [84]
Flubber would be considered an amorphous solid.<span />
7 0
4 years ago
Read 2 more answers
calculate the concentration in parts per million (ppm) of DDT if a sample size of 2000 g contained 0.050 g DDT
Firlakuza [10]

Answer:

= 25 ppm

Explanation:

  • PPM also refers to parts per million, it represents a low concentration of a solution. It represents 0.001 gram or a milligram in a 1000 mL, which equivalent to 1 mg per liter.

Given; a sample size of 2000 g contained 0.050 g DDT

It means, 2000 mL sample contained 50 mg DDT

Therefore in ppm we get;

= 50 mg/ 2 L

= 25 mg/L

<u>= 25 ppm</u>

4 0
3 years ago
A scientist is combining two grey elements he thinks he will get a compound why is this prediction wrong
DedPeter [7]
In a compund, the proportion must be fixed, unlike mixture. Therefore, if he just combine two elements, there must be excess elements mixed in it.
Second, how did he combined two elements? In order to create a compund, either heat or electricity must be applied.
Therefore, even if he used heat / electricity, he still hasn't got the right proportion, therefore he must have mixed some excess elements into the compund that he thought he made.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the mass of the water by using the water's density (assume it is 1.00 g/mL) and the volume of the water. Remember, den
    9·1 answer
  • Your task is to measure the amount of energy evolved during the combustion of some hydrocarbon. Which of the following would be
    10·1 answer
  • What are characteristics of a good scientific investigation
    15·1 answer
  • If aqueous solutions of Na2SO4 and BaCl2 are mixed, does a precipitate form? If yes, identify the precipitate and the spectator
    10·1 answer
  • What is a mass number​
    6·1 answer
  • What do you call it when the thermometer that you use to measure a temperature repeatedly gives you a measurement two degrees hi
    7·1 answer
  • What do you see happen when you decrease the frequency?
    15·2 answers
  • The ability of a substance to conduct electricity is called_______​
    15·1 answer
  • Write the name of the molecular compound C2Br4
    12·2 answers
  • Choose the weaker acid in each of the following pairs:HBr or H₂Se
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!