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
HACTEHA [7]
3 years ago
8

BRAINLIEST ANSWER! PLEASE HELP!! An Earth-like planet is 500 light years away. Why is this an obstacle for a manned space missio

n?
A. The cost is too low
B. There is no oxygen in space
C. Humans cannot live for 500 years
D. There are no plans to send a human
Chemistry
1 answer:
Setler79 [48]3 years ago
7 0
I Would think it would be C Since Humans can't live 500 years but then yet again it is light years not regular years i think if you find how man years is 500 light years the that could help you in finding the answer 
You might be interested in
Is the igneous rock destructive or constructive?
sammy [17]

This certain type of rock is constructive, not only from the fact that it was made up from earthly habits. But also it breaks down very easily, which can help the environment. Therefore a sedimentary rock is constructive.

5 0
3 years ago
A scientist performs an experiment in which a radium–226 (Ra–226) atom decays into radon–222 (Rn–222). The scientist concludes t
tangare [24]

Answer:

B)

Explanation:

5 0
3 years ago
Read 2 more answers
How can a substance stay at a certain temperature even though it is being heated?​
SOVA2 [1]
The temperature of a certain substance can be seen as the average speed of the atoms or molecules in that substance. In the liquid state of a substance the forces between the atoms or molecules are strong enough to keep them together, however with enough freedom to move, unlike in the solid state. If we would have a closer look at the surface of a liquid from sideways, we would see water molecules jumping out of the water and reentering it again. The lower the water temperature would be the lesser the amount of water molecules leaving the liquid phase would be. If water would be heated up and the temperature will reach 100 degrees C at normal atmospheric pressure, more water molecules would leave the water than reentering. Boiling has started. The temperature of the water remains at 100 degrees C, if the heating continues as the average speed of molecules will not increase, only the rate of molecules leaving the water will increase, until all the water in liquid state has been vapourized. The amount of heat needed to vapourize liquid water is called latent heat. Latent heat is a very important driving factor in the atmosphere and thus the weather.
5 0
3 years ago
My question is what is a cell?
frez [133]

The smallest functional and structural unit of an organism, usually microscopic and consisting of cytoplasm and a nucleus in a membrane.

5 0
3 years ago
Which of these statements is false? (A) Acetylene (ethyne) can be converted to the acetylide anion by treating with a strong bas
Free_Kalibri [48]

Answer:

(C) Acetylene (ethyne) can be converted to the acetylide anion by treating with a strong base such as CH₃​​Li.

Explanation:

Acetylene (C₂H₂) can be converted to the acetylide anion (C₂⁻²) when treated with a base because it will donate protons (2H⁺). So it will be a neutralization reaction. NaNH₂ and NaOH are strong bases because they are good electrons donators ( NaNH₂ has pair of electrons on N, and NaOH has the group OH⁻), but CH₃Li has no pair of electrons to donate, so it's not a strong base.

4 0
3 years ago
Other questions:
  • Explain. How you would separate a mixture of water, sand, salt, and iron feelings into its four component parts
    12·1 answer
  • Which of these is NOT a function of the digestive system?
    13·1 answer
  • What diet do bearded dragons thrive on?
    10·2 answers
  • Question 1 (5 points)
    14·1 answer
  • The density of mercury is 13.6 g/cm3, What is its density in mg/mm3?
    9·1 answer
  • You have 4.72x10^25 atoms of a substance with MW of 136.94 g/mol How many moles do you have
    14·1 answer
  • PLZ HELP 2 mins left
    10·1 answer
  • Which option is a physical property of matter?
    11·1 answer
  • Explain Rutherford’s gold foil experiment. What particle did he discover?
    7·1 answer
  • Fill in the blank in order to complete the path for pollen as it fertilizes a plant:anther → stigma --> style → _____________
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!