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
gavmur [86]
2 years ago
7

What is the formula for the compound formed when a potassium ion (K ) and a sulfide ion (S2-) unite?.

Chemistry
1 answer:
cupoosta [38]2 years ago
6 0

Answer:

The chemical formula for potassium sulfide is K2 S. Sulfur atoms need two electrons to fill their 3p electron orbitals.

Explanation:

You might be interested in
A helium balloon is filled on the ground where the atmospheric pressure is 768 torr. The volume of the balloon is 8.00 m3. When
Anvisha [2.4K]

Answer:

The correct option is: <u>B. 366 torr</u>

Explanation:

Given: <u>On the ground</u>- Initial Volume: V₁ = 8.00 m³, Initial Atmospheric Pressure: P₁= 768 torr;

<u>At 4200 m height</u>- Final Volume: V₂ = 16.80 m³, Final Atmospheric Pressure: P₂ = ?

Amount of gas: n, and Temperature: T = constant

<u>According to the Boyle's Law</u>, for a given amount of gas at constant temperature:         P₁ V₁ = P₂ V₂

⇒  P₂ = P₁ V₁ ÷ V₂

⇒  P₂ = [(768 torr) × (8.00 m³)] ÷ (16.80 m³)

⇒  P₂ = 365.71 torr ≈ 366 torr

<u>Therefore, the final air pressure at 4200 m height: P₂ = 366 torr.</u>

6 0
3 years ago
When comparing the colors of the following four compounds, which is most likely to appear green? [Co(CN)6]3− [Co(H2O)6]3+ [Co(en
alexandr1967 [171]

Answer:

3

Explanation:

its bc

5 0
3 years ago
Read 2 more answers
Whats the complete chemical symbol for the ion that has : 13 neutrons 11 protons , and 9 electrons.
myrzilka [38]
The answer gonna be Na2+
7 0
2 years ago
The Element rhenium has two naturally occurring isotopes, 185 Re and 187 Re, with an average atomic mass of 186.207 amu. Rhenium
BigorU [14]
To calculate the average mass of the element, we take the summation of the product of the isotope and the percent abundance. In this case, the equation becomes 186.207=187*0.626+185*x where x is the percent abundance of 185. The answer is 0.374 or 37.4%. This can also be obtained by 100%-62.6%= 37.4%. 
8 0
3 years ago
Write the advantages of molecular formula​
dusya [7]

Answer:

Its main advantage is <em>they information fits on one line of text</em> <u>(thus works well when using the formula in paragraphs)</u>. Disadvantages are <em>they can be confusing for larger molecules</em>

<em />

hope this helps :3

8 0
1 year ago
Other questions:
  • What atomic nucleus has the fewest protons
    9·1 answer
  • Which scientist observed that compounds are always joined together in fixed ratios?
    5·1 answer
  • What is weatherization?
    10·2 answers
  • Deep sea divers use a mixture of helium and oxygen to breathe. Assume that a diver is going to a depth of 150 feet where the tot
    5·1 answer
  • Write a balanced net ionic equation for the following reaction. Explain how you arrived at this answer. What did you cancel out?
    9·1 answer
  • A diver has 3,400 J of gravitational potential energy after climbing
    11·1 answer
  • The size of earthquakes is usually measured using the moment magnitude scale, which is a measure of the energy released.
    6·1 answer
  • HeLpPp asap I’ll mark you as brainlister
    13·1 answer
  • How is the kinetic energy of molecules changing when the molecules move faster?
    10·1 answer
  • Name 3 places that are carbon reservoirs​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!