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taurus [48]
2 years ago
14

IF anyone didn't do this E D G E N U I T Y thing here you guys go pass it around to people that need help this is what it is cal

led Quiz Ionic Bonding got 100%
1) which of these best describes an ionic bond?
correct answer- C) A force that holds two oppositely charged ions together.

2) Which pair of ions can form an ionic bond with each other and why?
correct answer- D) Li^+ and Br^ - ; They have unlike charges.

3) The table lists the lattice energies of some compounds.
Which statement about crystal lattice energy is best supported by the information in the table?
correct answer- A) The lattice energy increases as cations get smaller, as shown by LiF and KF.

4) Which statement is true about ionic compounds?
correct answer- C) They are made up of particles that are arranged in a repeating pattern.

5) Each model shows bonding between a pair of atoms.
Which statement best explains how the models differ?
correct answer- C) Model A shows the sharing of electrons, and model B shows the formation of ions.

6) Which property best indicates that a compound contains an ionic bond?
correct answer- D) It conducts electricity when molten.

7) Which of the following can easily form an ionic bond with a cation?
correct answer- D) PO43-

8) Which statement is true about a polyatomic ion?
correct answer- C) It is made of atoms that are covalently bonded together.

9) Which statement indicates that a substance may be an ionic compound?
correct answer- D) It is made up of a crystal lattice.

10) Which statement best describes how an ionic bond forms?
correct answer- A) The transfer of electrons forms strong bonds between ions.
Chemistry
1 answer:
SashulF [63]2 years ago
5 0

Answer:

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If 9.85 grams of copper metal react with 31.0 grams of silver nitrate, how many grams of copper nitrate can be formed and how ma
goldfiish [28.3K]
The balanced chemical reaction:

<span>Cu + 2AgNO3 = Cu(NO3)2 + 2Ag
</span>
We are given the amount of the reactants to be used for the reaction. These values will be the starting point of our calculations.

9.85 g Cu ( 1 mol Cu / 63.55 g Cu ) = 0.15 mol Cu
31.0 g AgNO3 ( 1 mol AgNO3 / 169.87 g AgNO3 ) = 0.18 mol AgNO3

The limiting reactant is AgNO3.

0.18 mol AgNO3 ( 1 mol Cu(NO3)2 / 2 mol AgNO3 ) (187.56 g / 1 mol) =16.88 g Cu(NO3)2

0.15 mol Cu - 0.18 mol AgNO3 ( 1 mol Cu / 2 mol AgNo3) = 0.06 mol Cu excess

<span>0.06 mol Cu ( 63.55 g Cu / 1 mol Cu ) = 3.81 g Cu excess</span>
3 0
3 years ago
Read 2 more answers
At a festival, spherical balloons with a radius of 280. Cm are to be inflated with hot air and released. The air at the festival
evablogger [386]

Answer:

8608.18 balloons

Explanation:

Hello! Let's solve this!

Data needed:

Enthalpy of propane formation: 103.85kJ / mol

Specific heat capacity of air: 1.009J · g ° C

Density of air at 100 ° C: 0.946kg / m3

Density of propane at 100 ° C: 1.440kg / m3

First we will calculate the propane heat (C3H8)

3000g * (1mol / 44g) * (103.85kJ / mol) * (1000J / 1kJ) = 7.08068 * 10 ^ 6 J

Then we can calculate the mass of the air with the heat formula

Q = mc delta T

m = Q / c delta T = (7.08068 * 10 ^ 6 J) / (1.009J / kg ° C * (100-25) ° C) =

m = 93566.96kg

We now calculate the volume of a balloon.

V = 4/3 * pi * r ^ 3 = 4/3 * 3.14 * 1.4m ^ 3 = 11.49m ^ 3

Now we calculate the mass of the balloon

mg = 0.946kg / m3 * 11.49m ^ 3 = 10.87kg

The amount of balloons is

93566.96kg / 10.87kg = 8608.18 balloons

5 0
3 years ago
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What is the sum of all charges in the formula for an ionic compound? +1 0 8 –1
Zarrin [17]

An ionic compound is formed between a metal and a non metal. The metal being electropositive can form a cation by transferring the electron to the electronegative non metal that gains the electrons to form an anion. Both the elements try to get a stable octet configuration by the transfer of electrons. The number of electrons lost by metal will be equal to the number of electrons gained by the non metal. Hence, the magnitude of positive charge on the cation will be equal to the magnitude of negative charge on the anion. Therefore, the overall charge on the compound will be 0

So the correct answer is the sum of all charges in the formula for an ionic compound is 0

5 0
3 years ago
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What is the molarity of a solution containing 0.32 moles of NaCI in 3.4 liters
CaHeK987 [17]

Answer:

.094 M

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Neutralization reaction??
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