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
kodGreya [7K]
3 years ago
14

What elements comprise the largest portion of Earth's atmosphere?​

Chemistry
1 answer:
Mrrafil [7]3 years ago
3 0

Answer:

Nitrogen and Oxygen make up 99% of the Earths atmosphere. Then Argon makes up the rest of the atmosphere.

You might be interested in
Designed to be a measure of the amount of energy released by an earthquake
11Alexandr11 [23.1K]
The answer is the moment magnitude scale
5 0
4 years ago
Pls help asap!! plssss​
kvv77 [185]

AgNO₃+NaCl⇒AgCl+NaNO₃

<h3>Further explanation</h3>

Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

Reaction

AB + CD⇒AD + CB

So for the option :

1. synthesis/combination reaction

2. decomposition reaction

3. double replacement reaction

4. single replacement reaction

4 0
3 years ago
The pKb of the base cyclohexamine, C6H11NH2, is 3.36. What is the pKa of the conjugate acid, C6H11NH3
bonufazy [111]

Answer:

10.64

Explanation:

Let's consider the basic reaction of cyclohexamine, C₆H₁₁NH₂.

C₆H₁₁NH₂(aq) + H₂O(l) ⇄ C₆H₁₁NH₃⁺(aq) + OH⁻     pKb = 3.36

C₆H₁₁NH₃⁺ is its conjugate acid, since it donates H⁺ to form C₆H₁₁NH₂. C₆H₁₁NH₃⁺ acid reaction is as follows:

C₆H₁₁NH₃⁺(aq) + H₂O(l) ⇄ C₆H₁₁NH₂(aq) + H₃O⁺(aq)   pKa

We can find the pKa of C₆H₁₁NH₃⁺ using the following expression.

pKa + pKb = 14.00

pKa = 14.00 - pKb = 14.00 - 3.36 = 10.64

6 0
4 years ago
Many bacteria cannot reproduce and cooler temperatures in our destroyed at high temperatures. How do you humans take advantage o
12345 [234]

freezer and refrigerator too cold for most bacteria to grow .oven too hot for bacteria to survive

3 0
3 years ago
Giveaway!! 2 more coming up.<br><br> hope you get it ! &lt;3
abruzzese [7]

Answer:

k

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • For the generic equilibrium HA(aq) ⇌ H+(aq) + A−(aq), which of these statements is true? For the generic equilibrium , which of
    8·1 answer
  • In a titration, 45.0 mL of KOH is neutralized by 75.0 mL of 0.30M HBr. How much KOH is in 1.0 liter of the KOH solution ?
    13·1 answer
  • A 1.00 g sample of a hydrogen peroxide (H2O2) solution is placed in an Erlenmeyer flask and diluted with 20 mL of 1 M aqueous su
    10·1 answer
  • 1) If calcium were to combine with the compound barium nitrate, which member of the barium nitrate would calcium replace?
    7·1 answer
  • Plz help me ppl I don't understand
    15·2 answers
  • In what group and period element with atomic number 13 belongs​
    8·1 answer
  • After an electric sign is turned on the temperature of its glass goes from 23.5°C to 65.5°C. The sign's glass has a mass of 90 g
    9·1 answer
  • using the soubility curve what is the solubilityof nh4cl in 10 mL of water at a temperature of 60 degrees Celsius​
    7·1 answer
  • How<br>many mols are in 151 g of dinitrogen monoxide? ​
    6·1 answer
  • HELLP: WHAT IS THE 10 ORGANIZATIONS OF MATTER???<br><br><br> WILL GIVE BRAINLEST
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!