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
erma4kov [3.2K]
3 years ago
6

How are elements in the same group similar

Chemistry
2 answers:
Georgia [21]3 years ago
5 0
All the elements in one group have the same number of valence electrons.
jek_recluse [69]3 years ago
5 0
They have the same amount of valence electrons
You might be interested in
Why water can be consider as an acid as well as base .explain briefly​
faltersainse [42]
It depends on the pH level of the water.
4 0
3 years ago
Read 2 more answers
HELP!!!!!!!!!! PLEASE!!! HELP!!
enyata [817]

Answer:

Ooh sweetie goodluck

Explanation:

May the gods ever be in your favor.

8 0
3 years ago
A solution contains 0.036 M Cu2+ and 0.044 M Fe2+. A solution containing sulfide ions is added to selectively precipitate one of
Ratling [72]

Answer:

The precipitate is CuS.

Sulfide will precipitate at  [S2-]= 3.61*10^-35 M

Explanation:

<u>Step 1: </u>Data given

The solution contains 0.036 M Cu2+ and 0.044 M Fe2+

Ksp (CuS) = 1.3 × 10-36

Ksp (FeS) = 6.3 × 10-18

Step 2:  Calculate precipitate

CuS → Cu^2+ + S^2-         Ksp= 1.3*10^-36

FeS → Fe^2+ + S^2-      Ksp= 6.3*10^-18

Calculate the minimum of amount needed to form precipitates:

Q=Ksp

<u>For copper</u>  we have:  Ksp=[Cu2+]*[S2-]

Ksp (CuS) = 1.3*10^-36 = 0.036M *[S2-]

[S2-]= 3.61*10^-35 M

<u>For Iron</u>  we have: Ksp=[Fe2+]*[S2-]

Ksp(FeS) = 6.3*10^-18 = 0.044M*[S2-]

[S2-]= 1.43*10^-16 M

CuS will form precipitates before FeS., because only 3.61*10^-35 M Sulfur Ions are needed for CuS. For FeS we need 1.43*10^-16 M Sulfur Ions which is much larger.

The precipitate is CuS.

Sulfide will precipitate at  [S2-]= 3.61*10^-35 M

3 0
3 years ago
A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is a _______ react
Georgia [21]
I believe the correct answer is B. Combination.
7 0
3 years ago
Read 2 more answers
I KNOW THE ANS JUST NEED AN EXPLANATION...PLEASE I WILL Mark you the brainiest
Reika [66]
I’m pretty sure it would be D.
5 0
2 years ago
Other questions:
  • What is the basic unit of all matter?What is the basic unit of all matter?
    13·2 answers
  • A type of plate boundary that is transform faults (easily seen where they cut at right angles to the mid-ocean ridges) A.) conve
    9·1 answer
  • Can some one please help to understand this problem??<br><br><br>​
    6·1 answer
  • Which of the following represent a mixture?
    7·1 answer
  • I need help answering 14 and 15
    13·1 answer
  • Calculate the theoretical yield of aspirin obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08
    14·1 answer
  • The sample of 15.0 g of KCl is dissolved into a solution with a total volume of 250.0 mL. What is the molarity of KCl in the sol
    5·1 answer
  • Gravity increases when:
    7·1 answer
  • I need help this is 7th grade science
    12·1 answer
  • Help this is so confusing like
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!