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
lilavasa [31]
3 years ago
5

I need help with this question! Can someone answer it for me? thank you!

Chemistry
1 answer:
qwelly [4]3 years ago
5 0

Answer:

One Valence Electron

Explanation:

It is classified as an alkali metal. Potassium atoms have 19 electrons and 19 protons with one valence electron in the outer shell. Potassium is considered chemically similar to sodium, the alkali metal above it on the periodic table. Under standard conditions potassium is a soft silvery-white metal.

You might be interested in
If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C , what is the difference between the ideal pressure (as predict
antiseptic1488 [7]

Hey There!

ideal gas law  :

PV = nRT

P = nRT/V

P = (1*0.082)(18+273)/(0.5) = 47.724 atm

For VDW :

(P + a(n/V)²)(V - nB) = nRT

P = nRT/(V - nB) - a(n/V)²

P = 1*0.082*(18+273)  / (0.5-1*0.03219) - 1.345*( 1/0.5 )² = 45.62

P = 45.62 atm

Pdif = P2-P1 = 47.724 - 45.62 = 2.104 atm

3 0
3 years ago
Which of these is an adventure of using natural gas
Arada [10]

Using natural gas is cheaper from other fossil fuels when used for personal needs. It also doesn't pollute the ground or the underground water.

6 0
4 years ago
A chemical change in which an ion of one compound replaces an ion of another compound is which of the following?
butalik [34]

Pick C Because it's

Explanation:

a chemical reaction in which one element replaces another in a compound. F₂ + 2NaCl → 2NaF + Cl₂, where F replaces Cl in NaCl. A double-replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.

6 0
3 years ago
When a substance evaporates, what happens to the mass? (4 points)
kirza4 [7]

Answer: C) The mass stays constant as it changed from a liquid to a gas

Explanation: Mass stays constant, it's never destroyed or created. It follows the law of conservation of mass.

5 0
4 years ago
2HCl + CaCO3 → CaCl2 + H2O + CO2
zloy xaker [14]

Answer:

The amount of CaCl2 produced depends on the amount of HCl in the reaction.

Explanation:

The amount of HCl is used completelyin the reaction unlike CaCO3 which remains after reaction.

4 0
3 years ago
Other questions:
  • Ammonium perchlorate is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen gas, chlor
    5·1 answer
  • Which of the following compounds is primarily covalent?
    6·1 answer
  • Name the following alkanes:<br> CH, - CH, -CH, - CH,<br> 1
    10·1 answer
  • Using eq. 7: calculate the buffer capacity (BC) of your buffer solution before and after dilution with water, and enter the valu
    7·1 answer
  • Is neon magnetic ? Also what id its freezing point?
    6·2 answers
  • 1) Chemical reactions produce what
    5·1 answer
  • Some transport processes use transport proteins in the plasma membrane, but do not require atp. this type of transport is known
    8·1 answer
  • What would be the balanced chemical equation for the complete combustion of butane ( C4H10 .)
    7·1 answer
  • If half of a radioactive isotope decays in one hour, how much of the original isotope will remain after three hours?
    5·1 answer
  • ( THANKS AND BRAINLIEST! )
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!