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
Lina20 [59]
3 years ago
13

Which "sphere" does an astronomer most directly study?

Chemistry
1 answer:
Colt1911 [192]3 years ago
4 0
B. exosphere. just remember they exit our world.
You might be interested in
C2H6BrCl is a compound. What is the ratio of carbon to bromine atoms in the molecules!
lubasha [3.4K]

Answer:

3  1

Explanation:

3 0
4 years ago
Explain any differences in the pulse rate at rest and after exercise ( in own words btw^^
timurjin [86]

Answer:

Pulse rate depends on the activity we do, while exercising theres need of more oxygen so it increases but while at rest body requires less oxygen so low pulse rate.

5 0
2 years ago
List as many things as you can see in the picture below
Kitty [74]
Abiotic: biotic
rocks animals
water plants
air fungi
sunlight bacteria
minerals
soil
7 0
3 years ago
D-Fructose is the sweetest monosaccharide. How does the Fischer projection of D-fructose differ from that of D-glucose? Match th
Aleks04 [339]

Answer:

aldehyde

carbon-1

ketone

carbon-2

Explanation:

Monosaccharides are colorless crystalline solids that are very soluble in water. Moat have a swwet taste. D-Fructose is the sweetest monosaccharide.

In the open chain form, monosaaccharides have a carbonuyl group in one of their chains. If the carbonyl group is in the form of an aldehyde group, the monosaccharide is an aldose; if the carbonyl group is in the form of a ketone group, the monosaccharide is known as a ketose. glucose is an aldose while fructose is a ketose.

In D-glucose, there is an aldehyde functional group, and the carbonyl group is at carbon-1 when looking at the Fischer projection.

In D-fructose, there is a ketone functional group, and the carbonyl group is at carbon-2 when looking at the Fischer projection.

6 0
3 years ago
The frequency of stretching vibrations is correlated to the strength and stiffness of the bond between two atoms. This can be th
Leona [35]

Answer:

a > c > b

Explanation:

As higher is the strength and stiffness of the bond between two atoms, more stable it is, and more difficult is to these bonds vibrate. So, the stretching vibration decreases when the strength and stiffness increases.

As more bonds are done between the atoms, more strength, and stiffness they have. So, the order of increase is:

simple bond > double bond > triple bond

And the increased frequency of vibration is:

triple bond > double bond > simple bond

An alkane is a hydrocarbon that has only simple bonds between carbons, an alkene is a hydrocarbon with one double bond between carbon, and an alkyne is a hydrocarbon with one triple bond. So, the increase in vibration of them is:

alkyne (a) > alkene (c) > alkane (b)

5 0
3 years ago
Read 2 more answers
Other questions:
  • The equilibrium constant for A + 2B → 3C is 2.1 * 10^-6
    15·1 answer
  • 3. The following equation represents the reaction between N,
    8·1 answer
  • Atom A emits mainly X rays when it is excited. Atom B emits mainly gamma rays. Which emission corresponds to a transition betwee
    5·2 answers
  • Plz help! I don't want internet answers plz :D
    5·1 answer
  • One of the hazards of nuclear explosions is the generation of 90Sr andits subsequent incorporation in place of calcium in bones.
    15·1 answer
  • How many paired electrons are in the lewis structure of lithium nitride?
    7·1 answer
  • How do you find the volume of a linear object?
    5·1 answer
  • What is the name of the functional group of pentanoic acid​
    9·2 answers
  • PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!Describe Earth's rotation and revolution . Be sure to include the durations and what they are r
    13·1 answer
  • Which of the following statements describe what a normative system is?​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!