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
belka [17]
3 years ago
8

Why does the periodic table have the shape it has

Chemistry
1 answer:
Orlov [11]3 years ago
5 0

Answer: The arrangement of electrons in atoms is responsible for the shape of the periodic table.

Explanation: Electron configurations can be predicted by the position of an atom on the periodic table.

                  O_O                               O_O                              O_O

                                        Add me as a freind!!! <3

You might be interested in
What factor would speed up a chemical reaction
vekshin1

Answer:

Adding Catalyst can Speed up a Chemical reaction

8 0
2 years ago
Read 2 more answers
Could someone explain how they got this answer, explain step by step plz
gulaghasi [49]

Answer:

6.018 amu

Explanation:

Let 6–Li be isotope A.

Let 7–Li be isotope B.

Let the abundance of 6–Li be A%

Let the abundance of 7–Li be B%

The following data were obtained from the question:

Atomic mass of isotope A (6–Li) =.?

Atomic mass of isotope B (7–Li ) = 7.015 amu.

Abundance of 7–Li (B%) = 92.58%

Abundance of 6–Li (A%) = 100 – B% = 100 – 92.58 = 7.42%

Atomic mass of Lithium = 6.941amu

The atomic mass of isotope A (6–Li) can be obtained as follow:

Atomic mass = [(Mass of A x A%)/100] + [(Mass of B x B%)/100]

6.941 = [(mass of A x 7.42)/100] + [(7.015x92.58)/100]

6.941 = [(mass of A x 7.42)/100] + 6.494487

(mass of A x 7.42)/100 = 6.941 – 6.494487

(mass of A x 7.42)/100 = 0.446513

Mass of A x 7.42 = 100 x 0.446513

Mass of A x 7.42 = 44.6513

Divide both side by 7.42

Mass of A = 44.6513 / 7.42

Mass of A = 6.018 amu

Therefore, the mass of 6–Li is 6.018 amu

7 0
3 years ago
Chloroform, CHCl3, reacts with chlorine, Cl2, to form carbon tetrachloride, CCl4, and hydrogen chloride, HCl. In an experiment 2
erastovalidia [21]

Answer:

Chloroform= limiting reactant

0.209mol of CCl4 is formed

And 32.186g of CCl4 is formed

Explanation:

The equation of reaction

CHCl3 + Cl2= CCl4 + HCl

From the equation 1 mol of

CHCl3 reacts with 1mol Cl2 to yield 1mol of CCl4

From the question

25g of CHCl3 really with Cl2

Molar mass of CHCl3= 119.5

Molar mass of Cl2 = 71

Hence moles of CHCl3= 25/119.5 = 0.209mol

Moles of Cl2 = 25/71 = 0.352mol

Hence CHCl3 is the limiting reactant

Since 1 mole of CHCl3 gave 1mol of CCl4

It implies that 0.209moles of CHCl3 will also give 0.209mol of CCl4

Mass of CCl4 formed = moles× molar mass= 0.209×154= 32.186g

6 0
3 years ago
Can you check this for me?
Aliun [14]
Hi, your answer is correct.
3 0
3 years ago
What does water undergo when it turns<br> to gas from liquid on surface of a<br> sidewalk?
Svetradugi [14.3K]

Answer:

Boiling - when the liquid is heated to a gas.

Evaporating - when the air temperature is hotter than the surface of the liquid so the water turns into water vapor or a gas.

Explanation:

6 0
3 years ago
Other questions:
  • Which of the following is an example of a good conductor of electrons A. glass B. pure metal C. Dry glasses D. All of the above
    6·2 answers
  • How many milliliters of 0.60 H₂SO₄ are required to neutralize 90 mL of 0.40 NaOH?
    7·1 answer
  • Is plastic wrap anf mixture or substance
    13·2 answers
  • Will the final amount of biodiesel change if you actually have more or less amount of catalyst​
    7·1 answer
  • Green plants use light from the Sun to drive photosynthesis, Photosynthesis is a chemical reaction in which water (H1,0) and car
    13·1 answer
  • Which of these is an indication that a chemical reaction has occurred?
    7·2 answers
  • Coral reef are threatened today mainly because
    10·2 answers
  • In order to change the intensity of the light, you change the wavelength of the light.
    14·1 answer
  • What is the OH- in a solution with a pOH of 7.68?
    15·1 answer
  • If 20.0 grams of Na reacts with 30.0 gtams of Cl2 what mass of NaCl is produfed by the reaction
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!