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
julia-pushkina [17]
3 years ago
9

How many moles are in 3.4 x 10^23 atoms of O2?

Chemistry
1 answer:
Tamiku [17]3 years ago
7 0

Answer:

5.00 moles..hope it helps

You might be interested in
What causes a chemical change In electrolytic cells?
skelet666 [1.2K]

your answer is A .



Hope This Helps

6 0
3 years ago
Please help!!!!!!!!!​
Alika [10]

Answer

At the crust

Explanation:

Mantle is far away from it unless its in a ocean.

3 0
2 years ago
Read 2 more answers
Which of the following atoms has 4 valence electrons
Mars2501 [29]
Can you show me the atoms please? I would be able to help.
5 0
3 years ago
A buffer solution contains 0.479 M NaHCO3 and 0.342 M Na2CO3. Determine the pH change when 0.091 mol HNO3 is added to 1.00 L of
pshichka [43]

Answer:

ΔpH = 0.20

Explanation:

The buffer of HCO₃⁻ + CO₃²⁻ has a pka of 10.2

HCO₃⁻ ⇄ H⁺ + CO₃²⁻

There are 0.479moles of NaHCO₃ and 0.342moles of Na₂CO₃.

Using Henderson-Hasselbalch formula:

pH = pka + log [Base] / [Acid]

pH = 10.2 + log 0.342mol / 0.479mol

<em>pH = 10.05</em>

NaOH reacts with HCO₃⁻ producing CO₃²⁻, thus:

NaOH + HCO₃⁻ → CO₃²⁻ + H₂O + Na⁺

0.091 moles of NaOH produce the same moles of CO₃²⁻ and consume HCO₃⁻. Moles of these species are:

CO₃²⁻: 0.342mol + 0.091mol: 0.433mol

HCO₃⁻: 0.479mol - 0.091 mol: 0.388mol

Using Henderson-Hasselbalch formula:

pH = pka + log [Base] / [Acid]

pH = 10.2 + log 0.433mol / 0.388mol

pH = 10.25

That means change of pH, ΔpH is:

ΔpH = 10.25 - 10.05 = <em>0.20</em>

<em />

I hope it helps!

3 0
3 years ago
What is the 3 types of matters​
baherus [9]

Answer:

Solid, liquid, and gas

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Will the vapors of acetic acid go to the floor or ceiling of a room
    9·1 answer
  • If a patient\'s blood pressure is 145 over 65 mmHg, what is it in atmospheres (atm)
    14·2 answers
  • Uestion 1
    7·1 answer
  • a collection of nerve fibers through which impulses travel between the central nervous system and other parts of the body
    12·1 answer
  • Liquids are similar to gases in that they both have
    9·1 answer
  • 13) State four factors that can disrupt the<br>balance of the ecosystem-<br><br>​
    14·2 answers
  • WDYT a mixture is? Please help
    12·1 answer
  • Need help with cemester​
    13·1 answer
  • 11. Which of the following best explains why Co, gas is easily compressible but solid CO, (dry ice) is incompressible?​
    12·1 answer
  • An atom of an element is shown by the model. <br> How is the model useful
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!