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
GrogVix [38]
3 years ago
15

-

Chemistry
1 answer:
mart [117]3 years ago
3 0

Answer:

reaction B is the best one I would choose

You might be interested in
What is the ph of a solution of 0.550 m k2hpo4, potassium hydrogen phosphate?
Solnce55 [7]
We assume that we have Ka= 4.2x10^-13 (missing in the question)
and when we have this equation:
H2PO4 (-) → H+  + HPO4-
and form the Ka equation we can get [H+]:
Ka= [H+] [HPO4-] / [H2PO4] and we have Ka= 4.2x10^-13 & [H2PO4-] = 0.55m
by substitution:
4.2x10^-13 = (z)(z)/ 0.55
z^2 = 2.31x 10^-13
z= 4.81x10^-7
∴[H+] = 4.81x10^-7
when PH equation is:

PH= -㏒[H+]
     = -㏒(4.81x10^-7) = 6.32

3 0
3 years ago
How many moles of ions are produced by ionization of 2 moles of MgCl2
tensa zangetsu [6.8K]

Answer:

number of ions = 12.04 x 10^²³

Explanation:

n = number of ions/Avogadro's constant

2 = number of ions/6.02 x 10^²³

number of ions= 2 x 6.02 x 10^²³

number of ions = 12.04 x 10^²³

3 0
2 years ago
How do the given animal reproduce ​
Aliun [14]

Answer:

Which animals????????

3 0
3 years ago
Read 2 more answers
The least active elements are the _______.
Andreas93 [3]
Noble gases are the least<span> reactive </span>elements<span> in the periodic table because they have a full valence shell. Examples are, Argon, Neon, Xenon, and Helium</span>
4 0
2 years ago
After taking a hot shower you may notice that the room gets steamy and the mirror is foggy you might also notice that there is m
ruslelena [56]

Answer:the temperature might increase because of the humidity in the room so everything gets goofy and moist

Explanation:

6 0
2 years ago
Other questions:
  • What is the value of Keq for the reaction expressed in scientific notation? 2.1 x 10-2 2.1 x 102 1.2 x 103 1.2 x 10-3
    14·2 answers
  • Does gallium have a roman numeral?
    6·2 answers
  • PLZ HELP! I will give brainliest for best answer!!!!
    14·1 answer
  • Which answer choice best describes the difference between folded mountains and fault-block mountains?
    7·2 answers
  • A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing point depression o
    9·1 answer
  • An electron is in a region outside the nucleus. An electron
    8·1 answer
  • 1 punto Kelvin, es la unidad de medida de: Intensidad o luminosa O Temperatura termodinámica O Corriente eléctrica O Cantidad de
    10·1 answer
  • A compound containing phosphorus and oxygen has a molar mass of 157.9 g/mol and an empirical formula of PO3 .
    14·1 answer
  • A substance is tested and has a pH of 7.0. How would you classify it?
    9·2 answers
  • Which of the following is not an example of weathering?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!