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
Gala2k [10]
3 years ago
5

How many molecules of ammonia would there be in 40.0 grams of ammonia?

Chemistry
1 answer:
Rina8888 [55]3 years ago
4 0

1.42x10^24 molecules

40.0 grams NH3 (6.02x10^23/17.0 grams NH3)= 1.42x10^24 molecules

You might be interested in
For each reaction, identify the element that gets reduced and the element that gets oxidized. 2 AgCl + Zn ⟶ 2 Ag + ZnCl 2 2AgCl+
Mnenie [13.5K]

Answer:

Explanation:

Oxidation:

Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Oxidizing agents:

Oxidizing agents oxidize the other elements and itself gets reduced.

Reducing agents:

Reducing agents reduced the other element are it self gets oxidized.

Consider the following reaction:

2AgCl + Zn  → 2Ag + ZnCl₂

In this reaction oxidation state of Zn on left side is 0 while on right side +2 so it gets oxidized and oxidation state of Ag on left side is +1 and on right side 0 so it get reduced.

4NH₃  +  3O₂   →   2N₂ +  6H₂O

In this reaction oxidation state of nitrogen on left side is -3 while on right side 0 so it gets oxidized and oxidation state of oxygen on left side is 0 and on right side -2 so it get reduced.

Fe₂O₃ +  2Al  →   Al₂O₃ +  2Fe

In this reaction oxidation state of iron on left side is +3 while on right side 0 so it gets reduced and oxidation state of Al on left side is 0 and on right side +3 so it get oxidized.

4 0
3 years ago
Why is Potassium not used in school laboratory
densk [106]
<h3>Because it is harmful for school environment.</h3>

Potassium Metal Is Explosive— Do Not Use It! The reaction of sodium with water is a spectacular and essential classroom demonstration. Many teachers want to show also the more violent reaction of potassium. We propose not to do so because explosions can happen even before the metal is in contact with water.

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

6 0
3 years ago
Read 2 more answers
WHAT IS NORMAL MUSCLE PH
larisa [96]
The skeletal muscle ph is typically 7.15
8 0
3 years ago
The equation K + NaOH =&gt; Na + KOH should it react, true or false?
Andru [333]

Answer:

yes it should react yoyoyoyoyo

3 0
3 years ago
What is the pH of a 0.0042 M hydrochloric acid solution?
babymother [125]

Answer:

E) 2.38

Explanation:

The pH of any solution , helps to determine the acidic strength of the solution ,

i.e. ,

  • Lower the value of pH , higher is its acidic strength

and ,

  • Higher the value of pH , lower is its acidic strength .

pH is given as the negative log of the concentration of H⁺ ions ,

hence ,

pH = - log H⁺

From the question ,

the concentration of the solution is 0.0042 M , and being it a strong acid , dissociates completely to its respective ions ,

Therefore , the concentration of H⁺ = 0.0042 M .

Hence , using the above equation , the value of pH can be calculated as follows -

pH = - log H⁺

pH = - log ( 0.0042 M )

pH =  2.38 .

4 0
4 years ago
Other questions:
  • How many atoms of carbon2C4H10 + 13O2 → 8CO2 + 10H2O have?
    8·1 answer
  • what is the difference between aqueous hydrogen fluoride and hydrofluoric acid? do they have different formulas or are they just
    6·1 answer
  • A 0.165 R of a C.H.O. compound was combusted in air to make 0.403 gofC0, and 0.165 H:0. What is the empirical formula? Balance t
    8·1 answer
  • What does the latent heat of fusion measure?
    8·1 answer
  • Concept Review<br> 14.11. Can a reaction that is not reversible achieve chemical equilibrium?
    7·1 answer
  • PLEASEE HELPPP FASTTTTT
    10·1 answer
  • In need of help!!!!
    7·1 answer
  • Which statement about the atomic nucleus is correct
    9·1 answer
  • How did the Europeans influence Latin America in their religion and language
    5·1 answer
  • !!!!100 POINTS!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!