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
disa [49]
2 years ago
9

I need help with this pleas ASAP this is over due

Chemistry
1 answer:
Trava [24]2 years ago
8 0
The answer is B.

Electrons emit energy when they return from the excited state to the ground state.
You might be interested in
Why is copper used in the manufacture of computers?
Stells [14]

IBM and others are using copper instead of aluminum in the most powerful computer chips they manufacture. Because of copper's superior electrical conductivity, this technology enables conductor channel lengths and widths to be significantly reduced.

3 0
2 years ago
Read 2 more answers
How many moles in 2 h2o molecules
alexandr1967 [171]

Answer:

2 molecules of water represents 3.32 x 10^-24 moles of water.

Explanation:

To find the solution to this problem, you have to use the concept of Avogadro´s number, that is in 1 mol of any element o compound there are                    6.022 x 10^23 molecules. Then,

1 mol H2O ------------- 6.022 x 10^23 molecules

x= 3.32 x 10^-24 ---- 2 molecules.

2 molecules of water represents 3.32 x 10^-24 moles of water.

5 0
2 years ago
What fraction of the carbon dioxide exhaled by animals is generated by the reactions of the citric acid cycle
puteri [66]

Answer:

1/3

Explanation:

Pyruvate is produced by the glycolysis in cytoplasm. The oxidation of pyruvate takes place in mitochondrial matrix.  

Pyruvate is converted to acetyl-CoA in the reaction given below:

Pyruvate + NAD⁺ + CoA-SH ⇒ acetyl-CoA + NADH + CO₂

1 molecule of carbon dioxide is eliminated from 1 molecule of pyruvate.

Also,  

2 molecules of carbon dioxide is eliminated from 2 molecules of pyruvate (as glucose on glycolysis yields 2 molecules of pyruvate).

Also, acetyl-CoA further goes into the citric acid cycle and produces 2 molecules of carbon dioxide.

Thus pyruvate produces total 3 molecules of CO₂  and hence glucose produces 6 molecules of CO₂ (as glucose on glycolysis yields 2 molecules of pyruvate)

Thus,

<u>Fraction = 2/6 = 1/3</u>

4 0
3 years ago
If i rub a balloon on a piece of paper then hold it against my head my hair will stand up why is that?
Alex_Xolod [135]
Static electricity is what occurs.
5 0
3 years ago
What is the name of the binary compound that has the formula k2s?
kozerog [31]

Potassium sulfide, also known as dipotassium monosulfide, consists of two potassium ions bonded to a sulfide atom, rendering the chemical formula K2S.<span>Rarely found in nature due to its high reactivity with water, potassium sulfide is refined from the more common potassium sulfate (K2SO4) and is used in many industries</span>

8 0
3 years ago
Other questions:
  • Which of the following gases is the heaviest? O2, CH4, CO2, Cl2 O2 CH4 CO2 Cl2
    15·2 answers
  • What is the smallest unit of an element called
    12·2 answers
  • How is stoichiometry used to calculate amount of product from amount of reactant?
    15·1 answer
  • What colors are absorbed Best Buy the plant gizmo
    7·1 answer
  • You have been given two unmarked containers.
    12·1 answer
  • Match the different methods used for calculating revenue and profit to the formulas used for calculating them. total revenue ave
    9·1 answer
  • If bald people work in a restaurant, do they still need to wear a hairnet?<br> Please help
    13·2 answers
  • What makes a cyclone rotate counter-clockwise north of the Equator and clockwise south of the Equator?
    11·2 answers
  • Please help! Choose one of the chemical reactions seen in the images on the last activity 1. Explain what happens in terms of en
    9·1 answer
  • Part E
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!