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
Svetllana [295]
3 years ago
12

PLEASE HELP

Chemistry
2 answers:
morpeh [17]3 years ago
6 0
<span>conductor because it conducts the electrons</span><span />
Gnom [1K]3 years ago
4 0
The answer to your question would be option 3 "conductor"
You might be interested in
Which development was a direct result of the
gladu [14]
"(2) increase in suburbanization" was a direct result of the <span>baby boom that followed World War II, but of course there were other factors that resulted as well. </span>
3 0
3 years ago
What is the kinetic energy of a 2kg rabbit hopping at a speed of 1.25 m/s
ICE Princess25 [194]

Answer:

What is the kinetic energy of a 2kg rabbit hopping at a speed of 1.25 m/s?1,5625J

6 0
3 years ago
How many is 1 min = ? km
Ivan
1 minute equals 60 kph.........Thanks Tionne17 for asking!!!
4 0
3 years ago
Help me please!!!!!!!!!!!!!
Mariana [72]

Answer:

D.

Explanation:

Hope this helps

4 0
3 years ago
The degree to which a weak base dissociates is given by the base-ionization constant, Kb. For the generic weak base, B B(aq)+H2O
Colt1911 [192]

Answer:

pH of a 0,245 M ammonia solution is 11,3 and percent ionization is 0,86%

Explanation:

For the equilibrium buffer of NH₃:

NH₃ + H₂O ⇄ NH₄⁺ + OH⁻; kb = 1,8x10⁻⁵

kb = [NH₄⁺] [OH⁻] / [NH₃] <em>(1)</em>

When 0,245 M of NH₃ is added, the equilibrium concentrations are:

[NH₃] = 0,245 - x

[NH₄⁺] = x

[OH⁻] = x.

Replacing this values in (1)

1,8x10^{-5} = \frac{x^2}{0,245 - x}

x² + 1,8x10⁻⁵x - 4,41x10⁻⁶ = 0

Solving for x:

x = -0,00211 No physical sense. There are not negative concentrations.

x = 0,00211 Real answer

Thus [OH⁻] in equilibrium is 0,00211 M.

As pOH = -log [OH⁻] and 14 = pH + pOH

pH of 0,00211 M is <em>11,3</em>

It is possible to calculate the percent ionization thus:

Percent ionization = [OH−] equilibrium / [B] initial×100%

Replacing:

0,00211 / 0,245 × 100 = <em>0,86%</em>

I hope it helps!

6 0
3 years ago
Other questions:
  • 1. Which is not true of binary compounds?
    11·2 answers
  • What is formed when two or more substances are so evenly combined that you can't see the different parts?
    12·2 answers
  • List at least three scientific disciplines related to chemistry mentioned or alluded to in the article. The Ozone Hole
    10·1 answer
  • 1. The following reaction does not proceed to form a product: H2O + Au---&gt; no reaction. Why is that?
    5·2 answers
  • 1. A room has dimensions 8.8 yd * 8.4 yd * 8.5 yd, what is its volume in L?
    9·1 answer
  • Describe the process of evaporation.
    7·1 answer
  • How many elements occur naturally?<br> ОА. 6<br> ОВ. 25<br> Ос. 90<br> OD. 118
    13·2 answers
  • I am doing an experiment that calls for 200g of H2SO4. How many moles of H2SO4 is this?
    10·1 answer
  • Calculate the number of moles of H2 in 63.0g
    15·1 answer
  • Advantages and disadvantages of Law of Triad :
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!