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
Leviafan [203]
2 years ago
13

Why are space probes and other unmanned crafts more commonly used for space investigations than space crafts with crews of astro

nauts?
Select one:

Unmanned crafts don't have to support human life

Manned missions are risky to human life

All of these are correct

Space probes are less expensive to launch
Chemistry
1 answer:
Crank2 years ago
4 0
All of these are correct.
You might be interested in
What is the oxidation state of Fe(s)
ad-work [718]

The  oxidation state is zero for Fe (s)

8 0
3 years ago
What is the solute in the mixture of muddy water
yarga [219]

Answer:

A solute is a solid which dissolves in a solvent. Muddy water contains water and soil, soil does not dissolve in water

6 0
3 years ago
WHY ACETIC ACID IS STRONGER IN STRENGHT THAN CHLOROACETIC ACID ...?
aleksandr82 [10.1K]
For this question, I think it is the other way around. It is true that chloroacetic acid is stronger in strength than acetic acid. Acid strength is measured as the equilibrium constant of the reaction <span>HA -----> H+ + A- 

</span><span> In acetic acid, the anion produced by dissociation is CH3-COO-; in chloroacetic acid it is CH2Cl-COO-. Comparing the two, in the first one the negative charge is taken up mostly by the two oxygen atoms. In the second there is also an electronegative chlorine atom nearby to draw more charge towards itself. Therefore, the charge is less concentrated in the chloroacetate ion than it is in the acetate ion, and, accordingly, chloroacetic acid is stronger than acetic acid. </span>
6 0
3 years ago
State two differences between metals and non metals with respect to their
Naya [18.7K]

Answer:

<u>Physical Properties</u>

1. Metals are shiny but most non - metals lack this property.

2. Metals are able to deform under compression (malleable) but most non - metals lack this property.

<u>Chemical Properties</u>

<u>1</u><u>.</u><u> </u><u>Metal</u><u>s</u><u> </u><u>are</u><u> </u><u>good</u><u> </u><u>conductors</u><u>of</u><u> </u><u>heat</u><u> </u><u>and</u><u> </u><u>electricity</u><u> </u><u>but</u><u> </u><u>most</u><u> </u><u>non</u><u> </u><u>-</u><u> </u><u>metals</u><u> </u><u>are</u><u> </u><u>insulators</u><u>.</u>

<u>2</u><u>.</u><u> </u><u>Metals</u><u>,</u><u> </u><u>when</u><u> </u><u>exposed</u><u> </u><u>to</u><u> </u><u>water</u><u> </u><u>atmospheric</u><u> </u><u>oxygen</u><u> </u><u>tend</u><u> </u><u>to</u><u> </u><u>rust</u><u> </u><u>but</u><u> </u><u>non</u><u> </u><u>-</u><u> </u><u>metals</u><u> </u><u>lack</u><u> </u><u>this</u><u> </u><u>chemical</u><u> </u><u>property</u>

7 0
3 years ago
Who is the Administrator of Brainly??​<br><br>Hopefully, someone will answer (◍•ᴗ•◍)❤
sleet_krkn [62]

Answer:

Hey mate....

Explanation:

This is ur answer....

.

Kavisharma/ Haezel is the admin of brainly......

hope it helps,

mark me as the brainliest.....

Follow me......xd

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? o,s si, p?
    8·1 answer
  • An electric iron is used to remove wrinkles from clothes the electric iron is made of metal which property of this substance is
    8·1 answer
  • 'if 100 grams of pure water taken from different sources is decomposed by passing electricity,11grams of hydrogen and 89 grams o
    11·1 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
  • During an experiment, 102 grams of calcium carbonate react with an excess amount of hydrochloric acid. If the percent yield of t
    6·1 answer
  • What's the functional group if ch3c2ch3oh​
    11·1 answer
  • PLEASE SOMEONE HELP dont mind the answers in there already
    7·1 answer
  • Convert 4.8 moles of calcium carbonate to<br> particles.
    15·1 answer
  • What is the powerhouse of the cell?​
    10·2 answers
  • Nitrogen dioxide is used industrially to produce nitric acid, but it contributes to acid rain and photochemical smog. What volum
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!