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
mote1985 [20]
2 years ago
9

What does it mean to classify?

Chemistry
1 answer:
pashok25 [27]2 years ago
3 0

Answer:

2

Explanation:

to separate objects or ideas into group based on ways they are alike

You might be interested in
Which of the following is a quantitative observation of the frog?
Nataliya [291]
Quantitative means to count how many of something. The correct answer is B, It has two eyes. Hope this helps
6 0
3 years ago
Read 2 more answers
Using the Bohr model, determine the energy in joules of the photon produced when an electron in a Li2+ ion moves from the orbit
djverab [1.8K]

Answer:

1.64x10⁻¹⁸ J

Explanation:

By the Bohr model, the electrons surround the nucleus of the atom in shells or levels of energy. Each one has it's energy, and the electron doesn't fall to the nucleus because it can reach another level of energy, and then return to its level.

When the electrons go to another level, it absorbs energy, and then, when return, this energy is released, as a photon (generally as luminous energy). The value of the energy can be calculated by:

E = hc/λ

Where h is the Planck constant (6.626x10⁻³⁴ J.s), c is the light speed (3.00x10⁸ m/s), and λ is the wavelength of the photon.

The wavelength can be calculated by:

1/λ = R*(1/nf² - 1/ni²)

Where R is the Rydberg constant (1.097x10⁷ m⁻¹), nf is the final orbit, and ni the initial orbit. So:

1/λ = 1.097x10⁷ *(1/1² - 1/2²)

1/λ = 8.227x10⁶

λ = 1.215x10⁻⁷ m

So, the energy is:

E = (6.626x10⁻³⁴ * 3.00x10⁸)/(1.215x10⁻⁷)

E = 1.64x10⁻¹⁸ J

3 0
3 years ago
a mixture consisting of only of lithium chloride, lithium carbonate, and lithium nitrate was analyzed
Dafna11 [192]

A mixture consisting of only of lithium chloride, lithium carbonate, and lithium nitrate was analyzed by the help of concentric hydrochloric acid.

<h3>What is concentric hydrochloric acid?</h3>

The concentric hydrochloric acid is used for the analysis of organic and inorganic mixture like  lithium chloride, lithium carbonate, and lithium nitrate it releases fumes and cannot be touched with normal hands.

Always use a dropper to use it and for the chemical analysis.

Therefore, mixture consisting of only of lithium chloride, lithium carbonate, and lithium nitrate was analyzed by the help of concentric hydrochloric acid.

Learn more about concentric hydrochloric acid, here,

brainly.com/question/24586675

#SPJ1

6 0
1 year ago
The ____ can be described as the basic unit of life. (2 points) atom neutron cell nucleus
Verizon [17]

Answer:

the cell can be the described as the basic unit of life

8 0
3 years ago
Read 2 more answers
Is the number of atoms in a substance dependent on the type of substance present?
lesya692 [45]
No  it depends on the molecules strength 
3 0
3 years ago
Other questions:
  • Compare the three atom diagrams. which one shows the electron with the highest potential energy
    8·1 answer
  • The​ half-life of​ carbon-14 is 5600 years. if a piece of charcoal made from the wood of a tree shows only 6363​% of the​ carbon
    10·1 answer
  • Crude oil pumped out of the ground may be accompanied by formation water, a solution that contains high concentrations of nacl a
    6·1 answer
  • In the diagram of the earth's interior, which part causes the diffraction of P waves made by earthquakes
    6·2 answers
  • After balancing the equation, what would be the coefficient for water? <br> __NH3+__O2=__NO+H2O
    12·1 answer
  • One cubic meter of an ideal gas at 600 K and 1000 KPa expand to five times its initial volume as follows:
    11·1 answer
  • What is the pOH of a 0.0072 M solution of sodium hydroxide? pOH=?
    8·2 answers
  • Class 9 <br> Chapter: Structure of the Atom <br> What are the alpha particles compared to?Why?
    11·1 answer
  • A 18.00 g candy bar is found to contain 11.00 g of sugar. How many mg of sugar does the candy bar contain ?
    11·1 answer
  • Consider the reaction below.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!