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
borishaifa [10]
3 years ago
14

What is the pH of a 9.50×10−2 M ammonia solution??

Chemistry
1 answer:
Darina [25.2K]3 years ago
4 0
NH₃ + H₂O ⇄ NH₄⁺ + OH⁻

c=9,50*10⁻² mol/L

Ammonia solution is a weak electrolyte.
The dissociation constant of ammonium hydroxide is:
K=1.78*10⁻⁵

[OH⁻]=√(Kc)

pH=14-pOH=14+lg[OH]⁻
pH=14+lg(√(Kc))

pH=14+lg(√(1.78*10⁻⁵*9.50*10⁻²))=8.23
pH=8.23
You might be interested in
E. solid copper sulfide and silver nitrate react to form copper (ii) nitrate and solid silver sulfide. write a balanced chemical
Rudiy27
It is reaction of ion exchange. Substances react in the melt. As a result we receive alloy of four salts.

CuS + 2AgNO₃ ⇄ Cu(NO₃)₂ + Ag₂S
5 0
4 years ago
Read 2 more answers
Are all forms of energy as useful to us or can we only use certain forms at home, in our cars, or computers?
tatiyna
All forces of energy are useful at home, like friction, friction can let us grip to the ground, or mechanical energy, used in cars because cars move, and computers same thing you move the mouse, type and do way more. Energy is always around us.
5 0
3 years ago
Develop a demonstration to show how mass is not the same thing as weight
pychu [463]

This is more of a physics explanation, but here we go.

Mass is a measure of how much "matter" is in an object. Weight is the force applied onto an object by gravity. Weight itself can be related to mass like this:

f_g = mg

where g is a gravitational constant. For our purposes, it's defined by whatever planet you are on. Following this, we can demonstrate that mass is NOT the same thing as weight if we take two objects of the same mass and put them on different planets.

Let E refer to Earth and F refer to Mars

g_E = 9.81 m/s^2\\g_F = 3.711 m/s^2

Following this, we can see clearly that weight is not the same as mass:

m*9.81 : m*3.711 \\\int\limits^a_b {x} \, dx 9.81 \neq 3.711\\f_g E \neq f_g F\\

If weight was the same thing as mass, the two values would be the same, as the mass of the two objects is the same. But since weight is defined in the context of gravity, they are not.

4 0
3 years ago
all of the following electromagnetic waves possess high energy that will damage the human body if overexposed, except _____. ult
Marrrta [24]
We use radiowaves all the time because they are harmless.  (as far as we know, although bees are dying and know one knows why, perhaps all the waves we use do have a negative effect)
Can I get a brainliest, please?
3 0
4 years ago
How many protons does ^31S have​
eduard

Answer:31

Explanation: Hope this helped.

8 0
3 years ago
Other questions:
  • How many electrons does chlorine have
    7·2 answers
  • An unknown gas effuses at a speed one quarter of that of helium. What is the molar mass of the unknown gas? It is either sulfur
    11·1 answer
  • Chemistry Help!<br> Reasons why nonmetals form covalent bonds?
    14·2 answers
  • Calculate the number of ions present in 8.2 moles of calcium nitrate
    12·1 answer
  • Which of the following qualities do China and India have in common?
    15·1 answer
  • Which chemicals are major contributors to ozone layer destruction? Select two answer choices.
    10·2 answers
  • Ethylene glycol (antifreeze) has a density of 1.11 g/cm3. What is the mass in grams of 387 mL of ethylene glycol?
    5·1 answer
  • If  O2(g) reacts with H2(g) to produce  H2O, what is the volume of H2O obtained from 1 L of O2?
    14·1 answer
  • Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will____
    9·1 answer
  • The group of organic molecule polymers with the most complex and diverse three-dimensional structure is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!