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
Lubov Fominskaja [6]
3 years ago
14

Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that ap

ply. According to Coulomb’s law, the Ca and Se ions have 4 times the attractive force (2+ × 2-) than that of the K and Br ions (1+ × 1-). According to Coulomb’s law, the Ca and Se ions have 4 times the repulsive force (2+ × 2-) than that of the K and Br ions (1+ × 1-). The lattice energy depends only on the sizes of constituent ions of the compound. The Ca2+ and K+ ions are four times larger in size than the Se2- and Br- ions. They Ca2+ and K+ ions are similar in size, as are the Se2- and Br- ions. Thus, the major difference in the lattice energies for these two compounds is due to the difference in the magnitude of the ionic charge on each ion. The lattice energy depends on the sizes of constituent ions of the compound. The Ca2+ is four times larger in size than the Se2- ion.
Chemistry
1 answer:
Elza [17]3 years ago
4 0

Answer:

According to Coulomb’s law, the Ca and Se ions have 4 times the attractive force (2+ × 2-) than that of the K and Br ions (1+ × 1-).

Explanation:

From Coulomb's law, the attractive force between calcium and selenium ions is four times the attractive force between potassium and bromide ions.

This has something to do with size and magnitude of charge. Calcium ions and selenide ions are smaller and both carry greater charge magnitude than potassium and bromide ions. This paves way for greater electrostatic attraction between them when the distance of the charges apart is minimal. Hence a greater lattice energy.

You might be interested in
Silver nitrate solution reacts with calcium chloride solution according to the equation: 2 AgNO3 + CaCl2 → Ca(NO3)2 + 2 AgCl All
HACTEHA [7]

Answer:

14.33 g

Explanation:

Solve this problem based on the stoichiometry of the reaction.

To do that we need the molecular weight of the masses involved and then calculate the number of moles, find the limiting reagent and  finally calculate the mass of AgCl.

                      2 AgNO₃   + CaCl₂    ⇒   Ca(NO₃)₂   + 2 AgCl

mass, g                  6.97        6.39                                     ?

MW ,g/mol         169.87      110.98                                  143.32

mol =m/MW           0.10         0.06                                    0.10

From the table above AgNO₃ is the limiting reagent and we will produce 0.10 mol AgCl which is a mass :

0.10 mol x 143.32 g/mol = 14.33 g

5 0
3 years ago
Are mass and *weight of matter* the same thing​
Scorpion4ik [409]

Answer:

Mass is the quantity of an object.

Weight is the force with which the object is attached towards the earth.

Hope it helps

7 0
3 years ago
Read 2 more answers
How many grams of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O?
shepuryov [24]

Explanation:

Molarity is defined as number of moles per liter of solution.

Mathematically,         molarity = \frac{no. of moles}{Volume (in L) of solution}

It is given that molarity is 0.0800 M and volume is 50.00 mL or 0.05 L.

           molarity = \frac{no. of moles}{Volume of solution in liter}

            0.0800 M = \frac{no. of moles}{0.05 L}

            no. of moles = 1.6 mol

Therefore, molar mass of cupric sulfate pentahydrate is 249.68 g/mol. So, calculate the mass as follows.

                No. of moles = \frac{mass in grams}{molar mass}

             mass in grams = no. of moles \times molar mass of CuSO_{4}.5H_{2}O

                                       = 1.6 mol \times 249.68 g/mol

                                       = 399.488 g

Thus, we can conclude that 399.488 g of cupric sulfate pentahydrate are needed to prepare 50.00 mL of 0.0800M CuSO4× 5H2O.

4 0
3 years ago
Is mercury good in making battery
mars1129 [50]

Answer:

No, Mercury can actually cause poisoning. That is why other metals, such as Alkaline metals, are used in making batteries

7 0
3 years ago
Read 2 more answers
20.00 mL of a 0.077 M solution of silver nitrate, AgNO3
melomori [17]
N= m/v n=0.077/.200 = 0.385
8 0
3 years ago
Other questions:
  • Important (question on k12 test)
    9·2 answers
  • When ice melts, what happens to the water molecules?
    9·2 answers
  • What is 2,4 hexadiene
    6·1 answer
  • A solution with a higher concentration of hydroxide ions (oh-) than hydrogen ions (h+)
    11·1 answer
  • Exactly 5.00 L of air at -50.0°C is warmed to 100.0°C. What is the new volume if the pressure remains constant?
    13·1 answer
  • What type of heat transfer will occur between the heated water in a heated pool and yourself?
    15·1 answer
  • Atoms of the element beryllium would most likely behave similar to the way _______ behaves.
    15·2 answers
  • PLZ HURRY
    15·2 answers
  • Which is greater , 3 moles of sulfur or 2 moles of iron sulphide
    9·2 answers
  • An expression is show below. - 1 2/3 - x
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!