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
Zina [86]
3 years ago
7

What does the author do to build understanding of the distance between Earth and this black hole? A They describe how long it wo

uld take a space ship traveling near the speed of light to reach it from Earth. B They compare the distance between the Earth and the sun to the distance between the Earth and the black hole. They explain a special unit of measurement astronomers use to describe distances in . They provide examples of other objects in space that are a similar distance from Earth
Chemistry
1 answer:
lana [24]3 years ago
8 0

Answer:

B

Explanation:

They compare the distance between the Earth and the sun to the distance between the Earth and the black hole

You might be interested in
What is the balance of S8+Br2=S3Br7
GalinKa [24]

Answer:

     3S₈  +  28Br₂ => 8S₃Br₇

Explanation:

Start with either sulfur (S) or bromine (Br) and balance ...

    3S₈  +  Br₂ => 8S₃Br₇    or      S₈  +  7/2Br₂ => S₃Br₇

Balance the remaining reactant ...

    3S₈  +  56/2Br₂ => 8S₃Br₇    

Remove fractions by multiplying by the fraction's denominator

    2(3S₈  +  56/2Br₂ => 8S₃Br₇)     =>     6S₈  +  56Br₂ => 16S₃Br₇      

Reduce to smallest whole number ratio => standard equation at STP ...

        3S₈  +  28Br₂ => 8S₃Br₇

8 0
3 years ago
The boiling points for a set of compounds in a homologous series can be qualitatively predicted using intermolecular force stren
shepuryov [24]

Answer:

The answer to your question is below

Explanation:

Alkane                      Formula                    Boiling point (°C)

Methane                   CH₄                                     -162

Ethane                      CH₃CH₃                               - 89

Propane                    CH₃CH₂CH₃                        - 42

Butane                      CH₃(CH₂)₂CH₃                     - 0.5

Pentane                    CH₃(CH₂)₃CH₃                      36

Hexane                     CH₃(CH₂)₄CH₃                      69

Heptane                    CH₃(CH₂)₅CH₃                      98

Octane                      CH₃(CH₂)₆CH₃                     126

Nonane                     CH₃(CH₂)₇CH₃                      151

Decane                      CH₃(CH₂)₈CH₃                     174

6 0
4 years ago
Answer plzzzz im begging
lisabon 2012 [21]

¿es demasiado tarde para ayudarte?

4 0
3 years ago
What types of elements are shown in the polyatomic ions in model 1?
boyakko [2]
These ions are disjoint by the charge on the ion into four dissimilar tables and listed alphabetically within each table. Each polyatomic ion, has it called, chemical, formula, two dimensional drawing, and three dimensional representation are given.
The three dimensional buildings are drawn as CPK models. CPK structures represent the atoms as sphere, where the radius of the sphere is equal to the van der waals radius of the atom; these buildings give a measure up the volume of the polyatomic atom.
4 0
4 years ago
Is bread a molecule or a compound
Papessa [141]

Answer:

Bread is a Molecule.

Explanation:

This is what I found.

Bread cannot be classified as a compound. Compounds are formed when two or more substances are bonded together chemically, however, mixtures are not chemically bonded.

The chemical building blocks of bread are proteins and starch. Starch molecules are long, chained polymers of simple sugars (such as glucose) joined end to end by chemical bonds. Proteins on the other hand are more complex, made up of varying combinations of different amino acids.

Hope this helps.

7 0
3 years ago
Other questions:
  • To find the mass of a mole of a compound scientists add together the
    10·1 answer
  • In the reaction of 6 moles of CH4 with excess oxygen, how many moles of water could be produced? A. 4 B. 6 C. 8 D. 12
    15·1 answer
  • What is the identity of an alpha particle?
    15·2 answers
  • #1. Which statement is a correct expression of the Law of Conservation of Mass? A. The total mass is unpredictable in a chemical
    11·2 answers
  • What is force and it's so unit?<br>​
    14·1 answer
  • How to add and subtract positive and negative fractions? ​
    15·1 answer
  • The_____gland controls your body's metabolism
    5·2 answers
  • A compound has an empirical formula CHO2 and its molar mass Is 90. Deduce the molecular formula
    13·1 answer
  • Some landforms you might see while traveling across the country could be
    9·1 answer
  • Bailee explained that when traveling to the moon, he needs to pack light because the weight of objects on the moon is the same a
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!