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
adelina 88 [10]
3 years ago
15

Which was least likely to have been a component of Earth’s atmosphere before life began?

Physics
2 answers:
skelet666 [1.2K]3 years ago
7 0

Oxygen would be what I'd choose. Before life was created was also before plants were around, so there was nothing to create oxygen through photosynthesis.

Otrada [13]3 years ago
4 0
The answer to this question is a) sulfur
You might be interested in
Water bubbles up through a hot spring at yellowstone national park. What method of heat transfer is this?
LuckyWell [14K]
I believe the answer is CONVECTION.




hope that helps!!!
4 0
3 years ago
Read 2 more answers
. Why are scientific models important? They help scientists prove scientific theories. They help scientists explain complex ques
sdas [7]
The best answer would be the 4th choice. "They help scientists explain concepts that are difficult to observe, this also covers the first answer which helps the scientist to answer complex questions. A scientific model is not used prove scientific laws as they may not always have all the data to prove so, instead it is used to allow them to explain better concepts revolving around science through research and may also allow them to predict results based on the accumulation of data and analyzing the trend of this resulting information.
3 0
4 years ago
for an ideal monoatomic gas, the internal energy U os due to the kinetic energy and U=3/2RT per mole.show that cv=3/2R per mole
sladkih [1.3K]

Answer:

i. Cv =3R/2

ii. Cp = 5R/2

Explanation:

i. Cv = Molar heat capacity at constant volume

Since the internal energy of the ideal monoatomic gas is U = 3/2RT and Cv = dU/dT

Differentiating U with respect to T, we have

= d(3/2RT)/dT

= 3R/2

ii. Cp - Molar heat capacity at constant pressure

Cp = Cv + R

substituting Cv into the equation, we have

Cp = 3R/2 + R

taking L.C.M

Cp = (3R + 2R)/2

Cp = 5R/2

3 0
3 years ago
The half-life of cobalt-60 is 5.26 years. If 50 g are left after 15.8 years, how many
PtichkaEL [24]

Answer:

400 g

Explanation:

The computation of the number of grams in the original sample is shown below:

Given that

half-life = 5.26 years

total time of decay = 15.8 years

final amount = 50.0 g

Now based on the above information  

number of half-lives past is

=  15.8 ÷ 5.26

= 3 half-lives

Now

3 half-lives = 1 ÷ 8 remains = 50.0 g

So, the number of grams would be

= 50.0 g × 8

= 400 g

4 0
3 years ago
??? True or false. An element can only exist as an individual atom.
KengaRu [80]
I think it's false because Oxygen is diatomic so it's found as O2 which means that it has two atoms of itself.
7 0
4 years ago
Other questions:
  • What is the phase ϕ(x,t) of the wave? Express the phase in terms of one or more given variables (A, k, x, t, and ω) and any need
    6·1 answer
  • Development of the Grand Canyon through the uplift of the plateau and erosion by the Colorado River illustrates that:
    13·2 answers
  • Which of the following utilize electromagnetic induction to operate?   
    12·1 answer
  • A particle travels along the x-axis in such a way that its acceleration at time t is a(t) = t + t2. if it starts at the origin w
    14·1 answer
  • An electric circuit can have no current when a switch is closed.<br> True<br> False
    13·1 answer
  • Help needed. The mass of an object times its velocity is the blank of the object ?
    14·2 answers
  • I WILL GIVE YOU BRAINLIEST!!
    7·1 answer
  • 17
    13·1 answer
  • Nicolaus Copernicus was a Polish astronomer who is best known for the theory that the sun is near the center of the universe and
    14·1 answer
  • An engineer measured the length of a building which was equal to 55.2 m. If there was an error of 0.02 m, what are the probabili
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!