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
Pie
3 years ago
9

El fluoruro de hidrógeno HF que se utiliza en

Chemistry
1 answer:
Blizzard [7]3 years ago
8 0

Answer:

25.6g de HF son producidos

Explanation:

<em>...¿Cuánto HF es producido?</em>

Para resolver este problema debemos convertir la masa de cada reactivo a moles usando su masa molar. Como la reacción es 1:1, el reactivo con menor número de moles es el reactivo limitante. Con las moles del reactivo limitante podemos obtener las moles de HF y su masa así:

<em>Moles CaF2:</em>

Masa molar:

1Ca = 40g/mol

2F = 19*2 = 38g/mol

40+38 = 78g/mol

50g CaF2 * (1mol/78g) = 0.641 moles CaF2

<em>Moles H2SO4:</em>

Masa molar:

2H = 2g/mol

1S = 32g/mol

4O = 64g/mol

98g/mol

100g H2SO4 * (1mol / 98g) = 1.02 moles H2SO4

Como las moles de CaF2 < Moles H2SO4: CaF2 es reactivo limitante.

<em>Moles HF usando la reacción:</em>

0.641 moles CaF2 * (2mol HF / 1mol CaF2) = 1.282 moles HF

<em>Masa HF:</em>

Masa molar:

1g/mol + 19g/mol = 20g/mol

1.282 moles HF * (20g/mol) =

<h3>25.6g de HF son producidos</h3>
You might be interested in
How many atoms of hydrogen in the product of the equation below:
Luden [163]

Answer: 12 atoms

Explanation: the equation has 6H2 i.e

6*2 = 12

6 0
3 years ago
Which of the following observations is usually not evidence of a chemical change ?
Nookie1986 [14]

Answer:

D

Explanation:

Have a nice day

5 0
4 years ago
The fact that same molecules of matter have been around for years is supported by​
Elza [17]

Answer:

The law of definite proportions

Explanation:

The law of definite proportions states that atoms combine in a molecule in a specific molar ratio or specific stoichiometry. For example, it's proved that regardless of the quantity we take, two hydrogen atoms always combine with one oxygen atom to form a water molecule.

Similarly, ionic substances follow the same pattern. Since the net charge of ionic salts should be equal to 0 and each element has a definite number of valence electrons in its shell all the time, the ions combine in a way, so that cations balance the charge of anions.

Essentially, the law of definite proportions is applicable and will be applicable in the future, since we know that each element has a fixed number of valence electrons in its ground state.

6 0
4 years ago
Arrange the elements in order of increasing atomic size: Li, N, B
alexgriva [62]

Answer:

N, B, Ni

Explanation:

8 0
3 years ago
Read 2 more answers
In what form metals are found in nature
Alika [10]

Answer:

Metals in nature are found in rock form, mineral forms etc..

7 0
3 years ago
Read 2 more answers
Other questions:
  • Explain, in terms of electron configuration, why oxygen atoms and sulfur atoms form compounds with similar molecular structures
    12·1 answer
  • It’s laundry day at Dan’s house, so he plugs in his electric iron. What transformation of energy takes place inside the iron? Th
    5·2 answers
  • The greater a habitat's biodiversity, the greater will be the habitat's, sustainability over time with varying conditions sustai
    11·1 answer
  • Do protons have attraction for neutrons yes or no
    5·1 answer
  • A tank has 1.90 mols of Nz gas under a pressure of 4.972 atm at 31.8 °C.
    15·2 answers
  • An enzyme acts to Group of answer choices raise the activation energy needed to start the reaction. lower the activation energy
    12·1 answer
  • Multi-Step Conversions (Always go through moles!)
    7·1 answer
  • Which circuit would light the light. A or B​
    9·2 answers
  • 46. Which of the following is not a form of matter?
    15·2 answers
  • Investigation of ions and Separation of Mixtures 1- Propose systematic schemes for the identification of the following salts wit
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!