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
tresset_1 [31]
2 years ago
14

Which statement correctly describes an atom of the element helium? A. An atom of helium has a full outer energy level and is the

refore unusually reactive. B. An atom of helium most similarly behaves like an atom of hydrogen since it is in the same period. C. An atom of helium has its valence electrons in its first energy level. D. An atom of helium has eight electrons in its outer energy
Chemistry
1 answer:
Citrus2011 [14]2 years ago
4 0
The correct description for an atom of helium would be option C. An atom of helium has its valence electrons in its first energy level, it wouldn't and can't satisfy the Octet rule as it only has 2 electrons, but with 2, it has a full shell, as the first energy level can hold only 2 electrons.
You might be interested in
Define 'hellowin '<br>is it celebrated ?​
Thepotemich [5.8K]

Answer:

The word "Halloween" comes from All Hallows' Eve and means "hallowed evening."

Halloween's origins can be traced back to the ancient Celtic festival known as Samhain, which was held on November 1 in contemporary calendars. It was believed that on that day, the souls of the dead returned to their homes, so people dressed in costumes and lit bonfires to ward off spirits.

Explanation:

4 0
2 years ago
Read 2 more answers
The universe cooled after the Big Bang. At some point, hydrogen atoms combined to form helium. What is this process called?
Lunna [17]
A) nuclear fusion is the answer
6 0
3 years ago
Read 2 more answers
Which of these actions would increase heat transfer between two objects?
klasskru [66]

Heat transfer is the phenomenon that occurs when the two objects are in the vicinity of each other and by increasing the area of their contact. Thus, option B is correct.

<h3>What is heat transfer?</h3>

Heat transfer is a process that flows the heat from one system to another, and is because of the difference in the temperature of the two objects that are part of the system.

The methods like conduction, convection, and radiation transfer the heat from the surface area to the other object. The heat gets transferred from the area of high to the low temperature.

Therefore, option B. by increasing the surface area the heat transfer increases.

Learn more about heat transfer here:

brainly.com/question/17823456

#SPJ1

5 0
2 years ago
What manmade changes to the environment potentially increase the impact of this hazard?
storchak [24]

Answer:

natural disasters

Explanation:

Drought.

Earthquake.

Flash flood.

Hurricane.

Tornado.

Wild fire.

Winter storm.

these are some examples, hope this helps :)

5 0
3 years ago
Read 2 more answers
An aqueous solution contains 1.00 g/L of a derivative of the detergent laurel alcohol. The osmotic pressure of this solution is
iVinArrow [24]

Answer:

mm = 1043.33 g/mol

Explanation:

osmotic pressure (π):

  • π = CbRT

∴ π = 17.8 torr = 0.0234 atm

∴ Cb: solute concentration

∴ T = 25°C = 298 K

∴ R = 0.082 atm.L/K.mol

⇒ Cb = π/RT

⇒ Cb = (0.0234 atm)/((0.082 atm.L/K.mol)(298 K))

⇒ Cb = 9.585 E-4 mol/L

molar mass (mm):

⇒ mm = (1.00 g/L)(L/9.585 E-4 mol)

⇒ mm = 1043.33 g/mol

7 0
3 years ago
Other questions:
  • One way to measure temperature in some applications is to monitor the gas pressure in a rigid, closed container. What is the tem
    6·1 answer
  • If the temperature of an object is 335 K, how would this be expressed on the Celsius scale?
    11·1 answer
  • A certain element consists of two stable isotopes. the first has a mass of 68.9 amu and a percent natural abundance of 60.4 %. t
    12·1 answer
  • You placed 43.1 g of an unknown metal at 100 °C into a coffee cup calorimeter that contained 50.0 g of water that was initially
    5·1 answer
  • What is the difference between interpreting and analyzing
    5·1 answer
  • Which phase has the most space between the particles?<br> A.solid<br> B.gas<br> C.liquid
    6·2 answers
  • Any moving object has _______________ energy A.kinetic B.potential C.gravitational potential
    13·2 answers
  • which of these pieces of equipment would be the most appropriate for precisely measuring 29 mL of liquid? Explain your reasoning
    15·1 answer
  • Question 2(Multiple Choice Worth 2 points)
    13·1 answer
  • What is the dot-and-cross diagram for magnesium chloride (MgCl2)??​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!