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
il63 [147K]
3 years ago
12

How much energy is reflected by the Earth system? 31 percent 69 percent

Chemistry
2 answers:
Rama09 [41]3 years ago
5 0

Answer:

The answer is 31 percent.

Explanation:

This is because about 50% of energy is absorbed by the Earth system

s344n2d4d5 [400]3 years ago
4 0
69 percent pleaseeeeeee
You might be interested in
_______ reach the surface first during an earthquake.
pentagon [3]
Answer:p waves hope that helps
5 0
3 years ago
Help due today! No random answered I’ll report you!, answer in full sentences!:)
nalin [4]
1. First taking in light, then electron transport
2. A main fuel for your brain. Without it, your brain wouldn't function well. Yes, you need it.
4 0
3 years ago
Which of the chemical equations is balanced?
Simora [160]

The third equation is properly balanced.

To figure this out, set up tables to check if each element has the same amount on both sides. If you do this for the third equation, copper, hydrogen, oxygen, and nitrogen are all balanced,

The first equation is incorrect due to the fact Iron, Fe, is not balanced on both sides. This is shown by the subscripts given.

The second equation is incorrect as Sulfur is not properly balanced and neither is sodium.

The fourth equation is incorrect as Aluminum is not properly balanced. On the reactants side, Aluminum is 4 while on the products, Aluminum is 8.

Hope this helps!


6 0
3 years ago
Which one of the following chemicals does the body generate during regular exercise?
Slav-nsk [51]
B. Endorphins are released during exercise
7 0
3 years ago
A mysterious white powder could be powdered sugar (C12H22O11), cocaine (C17H21NO4), codeine (C18H21NO3), norfenefrine (C8H11NO2)
konstantin123 [22]

Answer: norfenefrine (C_8H_{11}NO_2)

Explanation:

Depression in freezing point is given by:

\Delta T_f=i\times K_f\times m

\Delta T_f=T_f^0-T_f=(-114.6-(-115.5)^0C=0.9^0C = Depression in freezing point

i= vant hoff factor = 1 (for non electrolyte)

K_f = freezing point constant = 1.99^0C/m

m= molality

\Delta T_f=i\times K_f\times \frac{\text{mass of solute}}{\text{molar mass of solute}}\times \text{weight of solvent in kg}}

Weight of solvent (ethanol)= density\times volume=0.789g/cm^3\times 1.50cm^3=1.18g=1.18\times 10^{-3}kg

Molar mass of unknown non electrolyte = M g/mol

Mass of unknown non electrolyte added = 82 mg = 0.082 g (1g=1000mg)

0.9=1\times 1.99\times \frac{0.082g}{M g/mol\times 1.18\times 10^{-3}}kg}

M=154g/mol

The molecular mass of norfenefrine (C_8H_{11}NO_2) is near to 154 and thus the identity of the white powder is norfenefrine .

4 0
3 years ago
Other questions:
  • 6. <br><br>Which element has an atom with a total of three valence electrons?
    15·1 answer
  • What did Ernest Rutherford s gold foil experiment demonstrate about atoms?
    14·1 answer
  • Neptunium-240 has a half-life of 1 hour. If you start with a 200-gram sample, how much will remain after 4 hours?
    11·1 answer
  • Help me answer the question please I don’t get it this is earth science not chemistry.
    5·1 answer
  • As a distant star moves away from earth, the light given off by the star has a
    12·1 answer
  • Predict the products when aqueous solutions of sodium carbonate and calcium chloride are combined.
    15·1 answer
  • What’s the answer to this?
    6·1 answer
  • I don't understand with the question number 4, does anybody understand how to do it?
    7·1 answer
  • Why do we use Scientific Notation?
    9·2 answers
  • Which of the following has the highest concentration?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!