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
Vinil7 [7]
3 years ago
14

2. Se combinan 40 g de SO2 y 25 g de O2 determine el porcentaje en masa del exceso con respecto a su masa inicial. P.A. (S = 32;

O = 16) SO2 + O2  SO3
Chemistry
1 answer:
Marta_Voda [28]3 years ago
8 0

Answer:

60%

Explanation:

En la reacción:

2SO₂ + O₂ → 2SO₃

<em>Donde 2 moles de SO₂ reaccionan por mol de O₂.</em>

El peso atómico del SO₂ es:

1S = 32g/molₓ1 = 32g/mol

2O = 16g/molₓ2 = 32g/mol

SO₂ = 32g/mol + 32g/mol = <em>64g/mol</em>

Y el peso atómico de O₂ es:

2O = 16g/molₓ2 = <em>32g/mol</em>

Las moles de SO₂ y O₂ son:

SO₂: 40g ₓ (1mol / 64g) = <em>0.625 moles</em>

O₂: 25g ₓ (1mol / 32g) = <em>0.7813 moles</em>

Para una completa reacción de SO₂ se necesitan:

0.625 moles SO₂ ₓ (1mol O₂ / 2 mol SO₂) = <em>0.3125 moles de O₂</em>

Así, las moles en exceso de O₂ son:

0.7813 moles - 0.3125 moles = 0.4688 moles O₂

En gramos:

0.4688 moles O₂ ₓ (32g / mol) = 15g O₂ están en exeso.

El porcentaje en exceso es:

15g / 25g ₓ 100 =

<h3>60%</h3>
You might be interested in
The table below lists the properties of a metallic element. Shiny, Silver colored, Forms +1 and +2 ions, compound with sulfur is
shtirl [24]

Answer:

The correct option is;

Group 12

Explanation:

A metallic element that is shiny and silver colored that can exist in the +1 and +2 ionic states and  which forms a bright red compound with sulfur is mercury, Hg

The compound formed between mercury and silver is one of the earliest synthetic compound also known as vermilion and cinnabar. The bright red pigment of the HgS is used widely and is one of the most favorite pigment found in medieval European outstanding works of arts and in Chinese decorated wares made of lacquer as well as in mesoAmerica.

5 0
3 years ago
Read 2 more answers
An ionic compound is
Musya8 [376]

Answer:

a compound

welcome

7 0
3 years ago
Read 2 more answers
THE GEOCENTRIC MODEL
Mars2501 [29]

Answer:

C

Explanation:

6 0
2 years ago
What is 694,563,239 rounded to the nearest thousand
lina2011 [118]
694,563,239 rounded to the nearest thousand is 694,563.
 
It's because the first digit from the right is for ones, second for tens, third for hundreds and fourth for thousands and that's the one that we should take a closer look at. You can round it either to 3 or 4, depends on the digit of hundreds. In this case 3239 is clearly closer to 3000 than 4000, that's why we round it to 694,563, not 694,564.
6 0
3 years ago
Read 2 more answers
What is a substrate?
Anestetic [448]

Answer:

D. a reactant that is catalyzed by an enzyme

Explanation:

um

search engime

7 0
2 years ago
Other questions:
  • Which statement most accurately describes the behavior of a catalyst?
    14·1 answer
  • The atomic number of Zn2+ gives us the information about
    11·1 answer
  • Write the balanced equation showing hydrogen iodide (HI(g)) dissolving in water.
    15·1 answer
  • The half life of carbon 14 is 5730 years what fraction of the original c14 would you expect to be present in a fossil that is 28
    8·1 answer
  • What charge does Co have in Cobalt (III) Chloride?
    15·2 answers
  • Match the following.
    14·1 answer
  • How many atoms does theobromine have
    13·1 answer
  • Thank chu if you answer
    11·1 answer
  • Copper is a product of the reaction that occurs when dry ammonia is passed over a sample of heated copper(II) oxide. The equatio
    13·1 answer
  • 1. ¿Cuál de los factores se deben emplear para convertir: a. ¿Número de moles de cloro en número de moles de NaCl? b. Moles de s
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!