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
Natalija [7]
1 year ago
10

How many major layers of atmosphere does earth have

Chemistry
1 answer:
ryzh [129]1 year ago
3 0
Five major.

From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Troposphere.
You might be interested in
Why do elements that make positive ions occur on the left side of the periodic table while those that make negative ions occur o
Lynna [10]

Answer:

Elements in the same group have the same number of valence electrons.

Explanation: Science.

8 0
3 years ago
At a certain temperature the vapor pressure of pure heptane C7H16 is measured to be 454.mmHg. Suppose a solution is prepared by
OlgaM077 [116]

Answer:

Mass of heptane = 102g

Vapor pressure of heptane = 454mmHg

Molar mass of heptane = 100.21

No of mole of heptane = mass/molar mass = 102/100.21

No of mole of heptane = 1.0179

Therefore the partial pressure of heptane = no of mole heptane *Vapor pressure of heptane

Partial pressure of heptane = 1.0179*454mmHg

Partial pressure of heptane = 462.1096 = 462mmHg

the partial pressure of heptane vapor above this solution = 462mmHg

5 0
3 years ago
I am a celestial body that does not produce light. I orbit a planet
Artyom0805 [142]
A moon would be the correct answer.
5 0
2 years ago
What is the ratio of [a–]/[ha] at ph 2.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?
Varvara68 [4.7K]

The dissociation of formic acid is:

HCOOH \rightleftharpoons HCOO^{-} + H^{+}

The acid dissociation constant of formic acid, k_a is:

k_a = \frac{[HCOO^{-}]  [H^{+}]}{HCOOH}

Rearranging the equation:

\frac{[HCOO^{-}]}{[HCOOH]} = \frac{k_a}{[H_+]}

pH = 2.75

pH = -log[H^{+}]

[H^{+}]= 10^{-2.75} = 1.78 \times 10^{-3}

pk_a = 3.75

k_a = 10^{-3.75} = 1.78\times 10^{-4}

Substituting the values in the equation:

\frac{[HCOO^{-}]}{[HCOOH]} = \frac{k_a}{[H_+]}

\frac{[HCOO^{-}]}{[HCOOH]} = \frac{1.78\times 10^{-4}}{1.78\times 10^{-3}}

Hence, the ratio is \frac{1}{10}.

4 0
3 years ago
What is the number at the end of an isotope’s name?
Taya2010 [7]

Explanation:

5 I don't know what is the answer if I got it wrong

8 0
2 years ago
Read 2 more answers
Other questions:
  • Cr + 3fe3+cr3+ + 3fe2+ in the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced,
    6·1 answer
  • Explain how gas pressure is measured
    9·2 answers
  • The first step in coal formation process is the formation of:
    7·1 answer
  • Which substance is liquid at 0°C? 1. alcohol 2. aluminum 3. ammonia 4. copper
    11·1 answer
  • A mixture of gases with a pressure of 800.0 mm hg contains 60% nitrogen and 40% oxygen by volume. what is the partial pressure o
    5·1 answer
  • During electrolysis, electrons flow from
    10·2 answers
  • Complete the following table.
    10·2 answers
  • 1. The Yerkes-Dodson Law says
    12·1 answer
  • Which substance has a giant covalent structure and contains atoms of more than one element?A diamondB graphiteC methaneD sand
    11·1 answer
  • Evaluate Questions To narrow down the location for a new development, a construction company gets several plots of land assessed
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!