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
tangare [24]
3 years ago
9

Vitellium (Vi) has the following composition:Vi-188: 187.9122 amu; 10.861%Vi-191: 190.9047 amu; 12.428%Vi-193: 192.8938 amu; 76.

711%Based on this data, what can you predict about the average atomic mass of vitellium?
Chemistry
1 answer:
yKpoI14uk [10]3 years ago
7 0
10.861% / 100 = 0.10861

12.428 % / 100 = 0.12428

(0.10861 * 187.9122) + (0.12428 * 190.9407) <span>+ (0.76711 x 192.8938)</span>

= 192.1100 amu .

hope this helps!

You might be interested in
Nuclear power plants have the greatest environmental impact during __________. A) operation B) mining C) waste disposal D) const
lyudmila [28]
The correct option is C.
The issue of disposal of waste of nuclear power plants has been a controversial issue for long because of the hazardous effects which these wastes have on human health and the environment. Most of the waste are usually long lived radioactive wastes which can remain active for a very long time and which have detrimental effect on both the environment and the human health.<span />
5 0
3 years ago
Read 2 more answers
H2(g) + F2(g)2HF(g) Using standard thermodynamic data at 298K, calculate the entropy change for the surroundings when 2.20 moles
abruzzese [7]

<u>Answer:</u> The value of \Delta S^o for the surrounding when given amount of hydrogen gas is reacted is -31.02 J/K

<u>Explanation:</u>

Entropy change is defined as the difference in entropy of all the product and the reactants each multiplied with their respective number of moles.

The equation used to calculate entropy change is of a reaction is:

\Delta S^o_{rxn}=\sum [n\times \Delta S^o_{(product)}]-\sum [n\times \Delta S^o_{(reactant)}]

For the given chemical reaction:

H_2(g)+F_2(g)\rightarrow 2HF(g)

The equation for the entropy change of the above reaction is:

\Delta S^o_{rxn}=[(2\times \Delta S^o_{(HF(g))})]-[(1\times \Delta S^o_{(H_2(g))})+(1\times \Delta S^o_{(F_2(g))})]

We are given:

\Delta S^o_{(HF(g))}=173.78J/K.mol\\\Delta S^o_{(H_2)}=130.68J/K.mol\\\Delta S^o_{(F_2)}=202.78J/K.mol

Putting values in above equation, we get:

\Delta S^o_{rxn}=[(2\times (173.78))]-[(1\times (130.68))+(1\times (202.78))]\\\\\Delta S^o_{rxn}=14.1J/K

Entropy change of the surrounding = - (Entropy change of the system) = -(14.1) J/K = -14.1 J/K

We are given:

Moles of hydrogen gas reacted = 2.20 moles

By Stoichiometry of the reaction:

When 1 mole of hydrogen gas is reacted, the entropy change of the surrounding will be -14.1 J/K

So, when 2.20 moles of hydrogen gas is reacted, the entropy change of the surrounding will be = \frac{-14.1}{1}\times 2.20=-31.02J/K

Hence, the value of \Delta S^o for the surrounding when given amount of hydrogen gas is reacted is -31.02 J/K

7 0
3 years ago
How many molecules are in 4.0 moles of propane (C3H8)
Lapatulllka [165]

Answer:

2.408x10^24 molecules

Explanation:

1mole of a substance contains 6.02x10^23 molecules.

This means that 1mole of C3H8 contains 6.02x10^23 molecules.

Therefore, 4moles of C3H8 will contain = 4 x 6.02x10^23 = 2.408x10^24 molecules

5 0
3 years ago
Energy transfers vary in their efficiency. What kind of energy is most likely to flow out of a system? Question 3 options: Poten
raketka [301]
Chemial and thermal is your answers

8 0
3 years ago
El número de átomos de una molécula depende de la --- de los elementos ya que es la capacidad de la union de átomos ?
ss7ja [257]

Answer:

El número de átomos de una molécula depende de la "valencia" de los elementos, ya que es la capacidad de la unión de los átomos.

Explanation:

La valencia de un elemento se define como la medida de la capacidad de combinación de un elemento. Es la capacidad de combinación de un elemento con otros elementos para formar un compuesto químico o molécula.

Básicamente es el número de electrones de valencia que un elemento puede perder, ganar o compartir para formar enlaces químicos requeridos a partir de compuestos o moléculas.

¡¡¡Espero que esto ayude!!!

English Translation

The number of atoms of a molecule depends on the "valency" of the elements since it is the capacity of the union of atoms.

The valency of an element is defined as the measure of the combining ability of an element. It is the combining capacity of an element with other elements to form a chemical compound or molecule.

It is basically the number of valence electrons that an element can lose, gain or share in order to form chemical bonds required to from compounds or molecules.

Hope this Helps!!!

4 0
3 years ago
Other questions:
  • Given the following equation: 2 K3N ---&gt; 6 K + N2 How many moles of N2 can be produced by letting 12.00 moles of K3N react?
    6·1 answer
  • An atom has no electrical charge because _____.
    5·1 answer
  • Give an example of how a functional group can affect the properties of an organic compound.
    11·1 answer
  • What information does the activity series of metals give?
    8·1 answer
  • You dilute 225 mL of a 4.5 M calcium carbonate solution. You need a final concentration of 0.038 M calcium carbonate. What volum
    11·1 answer
  • Sibling rivalry may occur when:
    7·1 answer
  • Which set of numbers gives the correct possible values of I for n = 22
    13·1 answer
  • Problema 5
    8·1 answer
  • Magnesium reacts with the oxygen in the air to form magnesium oxide. If 35 g of O2 was used in the reaction. How many Liters of
    7·1 answer
  • A ball is dropped from a height of 20 feet onto a trampoline. When it hits the trampoline, it creates a 2-foot depression in the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!