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
Alekssandra [29.7K]
3 years ago
9

WHY did the changes to the atomic model happen

Chemistry
1 answer:
Tom [10]3 years ago
4 0
The model<span> of the </span>atom<span> has dramatically </span>changed<span> over many many years.We learn </span>atoms<span> make up different substances and are the smallest particles of matter. which can have subatomic particles that are very small portions of matter.at first scientist only thought there were electrons which are negatively charged.</span>
You might be interested in
Who helps recycle nutrients through an ecosystem? A. producers and decomposers B. producers and consumers C. consumers and decom
s2008m [1.1K]

D. Producers im sure of it hope im right

8 0
4 years ago
Read 2 more answers
Show the difference between a saturated hydrocarbon and an unsaturated hydrocarbon.
harkovskaia [24]
Saturated hydrocarbons consists of C-C single bond whereas Unsaturated hydrocarbons consists C-C double/triple bond.
4 0
3 years ago
WILL MARK BRAINLIEST
Readme [11.4K]
Species are the smallest groups. A species consists of all the animals of the same type, who are able to breed and produce young of the same kind. For example, while any two great white sharks are in the same species, as are any two makos, great whites and makos are in different species (since they can't interbreed Answer :SPECIES
8 0
3 years ago
Can u answer all of em
TiliK225 [7]

Answer:

one is across

Explanation:

8 0
3 years ago
Convert 213.62 grams of xenon gas at STP to L.
jolli1 [7]

Answer: The coefficient is 3.645

The exponent is 1

There are 4 significant digits

The rightmost significant figure is 5

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as 5.0\times 10^3

According to avogadro's law, 1 mole of every gas contains avogadro's number 6.023\times 10^{23} of particles, occupy 22.4 L at STP and weighs equal to its molecular mass.

131.29 g of Xe occupy = 22.4 L at STP.

Thus 213.62 g of Xe occupy = \frac{22.4}{131.29}\times 213.62=36.45L at STP.

Scientific notation = 3.645\times 10^1L

The coefficient is 3.645

The exponent is 1

There are 4 significant digits

The rightmost significant figure is 5

4 0
3 years ago
Other questions:
  • A substance containing atoms of two or more different elements chemically bonded together is called what
    14·1 answer
  • An (blank) is an abbreviation for the name of an element and usualy has eighter one or two letters
    14·1 answer
  • During an experiment, solid iodine was placed in a sealed container. The container was gradually heated and purple-colored vapor
    9·2 answers
  • Why does Australian get more uv light than othet parts of the world?​
    11·1 answer
  • How many elements are found in the following chemical equation? K + Cl → KCl
    11·2 answers
  • 10.7g of C2H2 --&gt; g CO2
    15·1 answer
  • A man of 450 N covers an area of 0.0015m2 while standing on his feet.calculate the pressure exerted by him on the ground.
    12·1 answer
  • Whats minimum temperature for scrabble eggs
    12·2 answers
  • 4. Complete the reaction : Copper Sulphate (Cuso.) + Iron (Fe)-&gt; + Copper ( Cu) ,1. Zinc Sulphate ( ZnSO2) ,
    13·1 answer
  • In the ground state an atom of which element has seven valence electrons.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!