answer.
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
LenaWriter [7]
2 years ago
10

The melting points for the compounds li2s, rb2s, and k2s are 900°c, 530°c, and 840°c, respectively. list these three compounds i

n order of increasing lattice energy.
Chemistry
1 answer:
Mila [183]2 years ago
7 0

Answer: The order of increasing lattice energy is Li_2S>K_2S>Rb_2S

Explanation: Lattice energy is defined as the energy required to break the intermolecular force that is responsible for the formation of a lattice.

Melting point is defined as the temperature at which solid gets converted into liquid due to the weakening of the bonds in the solid form.

  • Relation between lattice energy and Melting point:

The relationship between these two is direct.

\text{Lattice energy}\propto \text{Melting point}

More the melting point of a compound, more will be its lattice energy.

Order of increasing Lattice energy will be:

Li_2S>K_2S>Rb_2S

You might be interested in
consideras util conocer las propiedades extensivas e intensivas de los insumos utilizados para la elaboración de producto ¿por q
Brums [2.3K]

Answer:

Explanation:

No.

Las propiedades físicas de los materiales y sistemas a menudo se pueden clasificar como intensivas o extensivas, según cómo cambia la propiedad cuando cambia el tamaño (o extensión) del sistema. Según la IUPAC, una cantidad intensiva es aquella cuya magnitud es independiente del tamaño del sistema, mientras que una cantidad extensiva es aquella cuya magnitud es aditiva para los subsistemas. Esto refleja las ideas matemáticas correspondientes de media y medida, respectivamente.

Una propiedad intensiva es una propiedad a granel, lo que significa que es una propiedad física local de un sistema que no depende del tamaño del sistema o de la cantidad de material en el sistema. Los ejemplos de propiedades intensivas incluyen temperatura, T; índice de refracción, n; densidad, ρ; y dureza de un objeto.

Por el contrario, propiedades extensivas como la masa, el volumen y la entropía de los sistemas son aditivas para los subsistemas porque aumentan y disminuyen a medida que crecen y se reducen, respectivamente.  

Estas dos categorías no son exhaustivas, ya que algunas propiedades, físicas no son exclusivamente intensivas ni extensivas. Por ejemplo, la impedancia eléctrica de dos subsistemas es aditiva cuando, y solo cuando, se combinan en serie; mientras que si se combinan en paralelo, la impedancia resultante es menor que la de cualquiera de los subsistemas.

¡Espero haberte ayudado!  :)

7 0
2 years ago
his is the chemical formula for chromium(III) nitrate: . Calculate the mass percent of oxygen in chromium(III) nitrate. Round yo
Alinara [238K]

Answer:

\%\ Composition\ of\ iron=69.92\ \%

Explanation:

Percent composition is percentage by the mass of element present in the compound.

The formula for chromium(III) nitrate is Cr(NO_3)_3

Molar mass of chromium(III) nitrate = 238.011 g/mol

1 mole of chromium(III) nitrate contains 9 moles of oxygen

Molar mass of oxygen = 16 g/mol

So, Mass= Molar mass*Moles = 16*9 g = 144 g

\%\ Composition\ of\ iron=\frac{Mass_{iron}}{Total\ mass}\times 100

\%\ Composition\ of\ iron=\frac{144}{238.011}\times 100

\%\ Composition\ of\ iron=69.92\ \%

5 0
2 years ago
Using the solubility curve, what is the effect of increased temperature on the solubility of KBr in 100 grams of water? The solu
galina1969 [7]
The graph is needed to answer this question.

Solubility may increase or decrease with temperature depending on the properties of the solute and the solvent.

It is quite common that the solubility of the ionic compounds, like KBr, in water increases with temperature.

Use your solubility curve for the KBr and you wiil see a line that starts at a solubility a little greater than 50 grams of the salt in 100 grams of water for temperaute 0°C and increase linearly until almost 100 grams of the salt in 100 grams of water at 100°C.

So, in this case you can affirm that the solubility of KBr increases with the temperature.

Answer: the second option: the solubility increases.
7 0
2 years ago
Read 2 more answers
Joyce has a mixture of oil and powdered sugar. The tiny pieces of sugar do not mix evenly with the oil and they do not settle to
Inessa [10]
<span>Sugar is not soluble in Oil so it coagulated when Joyce added sugar to oil. But sugar is soluble in water so when Joyce added water in the mixture of OIl and Sugar and then shaked it the sugar dissolved in the water.Leaving no traces behind.As Oil is hydrophobic it doesn't mix with water instead it floats on top.So by using the solubility of sugar in water Joyce separated sugar from oil</span>
7 0
2 years ago
Read 2 more answers
How many miles are in 37km
DanielleElmas [232]

There are 22.99073411 miles in 37 kilometers.

You would use the formula (Miles = Kilometers * 0.621371192) to get your answer.

Other calculations:

37 kilometer(s) = 40463.69 yards

37 kilometer(s) = 121391.08 feet or foot

37 kilometer(s) = 1456692.91 inches

Hope this helps! :)

7 0
2 years ago
Read 2 more answers
Other questions:
  • Which material has a crystalline structure at room temperature ( 20 degrees Celsius )
    6·2 answers
  • An electron in the n=6 level of the hydrogen atom relaxes to a lower energy level, emitting light of ?=93.8nm. find the principa
    7·2 answers
  • Based on the crystal-field strengths cl- &lt; f- &lt; h2o &lt; nh3 &lt; h2nc2h4nh2, which octahedral ti (iii) complex below has
    9·1 answer
  • Calculate the hydroxide ion concentration [oh-] for human urine (ph = 6.2). notice this is about hydroxide.
    5·1 answer
  • What is the pH of a solution with a 7.8 × 10−13 M hydronium ion concentration?
    14·2 answers
  • Air pressure is lower at high altitudes. An airplane cabin can adjust, but as the plane rises, passengers can experience tempora
    14·2 answers
  • The energy difference between the 5d and 6s sublevels in gold accounts for its color. Assuming this energy difference is about 2
    14·1 answer
  • The mass of an atom comes from _____. A. the nucleus B. the neutrons C. the electro​​​​ns D. the protons
    15·1 answer
  • (a) At what substrate concentration would an enzyme with a kcat of 30.0 s−1 and a Km of 0.0050 M operate at one-quarter of its m
    13·1 answer
  • Emma wants to go swimming the first day the pool opens in May, but she is worried it will be too cold since summer only just sta
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!