The crystal lattice structure of ionic compounds is responsible for which set of characteristic properties?

Answers

Answer 1

Answer:

Answer:

The characteristic properties are hard and brittle solids having high melting and boiling point

Explanation:

Ionic compounds are the type of chemical compounds that are formed by ionic bonding. An ionic compound is composed of two oppositely charged ions that are held together by electrostatic forces of attraction.

They are solids at room temperature and usually have a crystalline structure and have high melting and boiling point. Ionic compounds are hard but also brittle.

Answer 2

Answer: If your using Plato the answer is E.

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Which of the following is malleable?
A. glass
B. pottery
C. ice
D. gold

Answers

The answer is D. Gold. Malleability, the ability for a material to be hammered or shaped into thin sheets, is a common property of metals. Among the choices, gold is the only metal. Also, gold is considered to be the most malleable metal.

Final answer:

Gold is malleable while glass, pottery, and ice are not.

Explanation:

Malleability is the ability of a material to be hammered or rolled into thin sheets without breaking. Gold is highly malleable and can be shaped into various forms, such as jewelry and gold leaf. Glass, pottery, and ice, on the other hand, are not malleable because they will break or shatter when hammered or rolled into thin sheets.

Gold is malleable because its metallic bonds allow its atoms to slide past one another without breaking. Glass, pottery, and ice lack these bonds and have a more rigid structure, making them non-malleable. Instead, glass and pottery are brittle, while ice can fracture under stress due to its molecular structure.

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Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acidic, basic, or neutral? Show your work

Answers

You can use the fallowing equations:
pH=-log[H⁺]
pH=14-pOH
pOH=-log[OH⁻]
[H⁺]=K(w)/[OH⁻] (K(w)=1.01×10⁻¹⁴)

You can use any of those equation in what ever order to find the [H⁺] and then pH. If pH>7, the solution is basic. If the pH<7, the solution is acidic.

I will show you how I would find it but there is more than one way to do it.
[H⁺]=(1×10⁻¹⁴)/(10⁻¹¹)
[H⁺]=0.001M
pH=-log(0.0010)
pH=3.00
Therefore the solution is acidic.

I hope this helps. Let me know in the comments if anything is unclear.

Answer:

If we have $[H+][OH-] = Kw = 1.0 x 10^-^1^4$

Then $[H+]= Kw/ [OH-]= 1.0x 10^-^1^4/ 1 x 10^-^1^1 =1 x 10^-^3 mol/L$

$pH = - log [H+] = - log 1 x 10^-^3 = 3$ $< 7$

This is a Acidic Solution

hope this helps

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The molar mass of Ba(OH)2 is
(1) 154.3 g (3) 171.3 g
(2) 155.3 g (4) 308.6 g

Answers

The molar mass of barium hydroxide is 171.3 g/mol (option 3).

What is molar mass?

Molar mass is the mass of a given substance divided by its amount, measured in moles. It is commonly expressed in grams per mole.

The molar mass of a compound can be calculated by summing up the atomic masses of the constituent elements. According to this question, barium hydroxide was given. The molarmass can be calculated as follows:

Ba(OH)₂ = 137.33 + (16 + 1)2

= 137.33 + 34

= 171.3g/mol (option 3).

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Ba(OH)₂ = 137.3 + 16 x 2 + 1 x 2 = 171.3 g

Answer (3)

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What is the name of the movement of the Earth around the Sun as pointed out by letter J.

Answers

it is called the Earth's rotation

Uncontrolled hypertension can lead toA. heart attack.
B. stroke.
C. kidney damage.
D. all of the above.

Answers

All of the above,this can lead to stokes, heart attacks and kidney damage.
Hypertension puts pressure on the blood vessel walls which can damage them, the vessels in your heart, brain and other organs can be damaged by uncontrolled hypertension.

a compound consists of 17.6% of hydrogen and 82.4% nitrogen. Determine the empirical formula of the compound

Answers

Answer: The empirical formula for the given compound is $NH_3$

Explanation:

We are given:

Percentage of H = 17.6 %

Percentage of N = 82.4 %

Let the mass of compound be 100 g. So, percentages given are taken as mass.

Mass of H = 17.6 g

Mass of N = 82.4 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Hydrogen = $\frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=(17.6g)/(1g/mole)=17.6moles$

Moles of Nitrogen = $\frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=(82.4g)/(14g/mole)=5.88moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 5.88 moles.

For Hydrogen = $(17.6)/(5.88)=2.99\approx 3$

For Nitrogen = $(5.88)/(5.88)=1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of H : N = 3 : 1

Hence, the empirical formula for the given compound is $NH_3$

17,6% + 82,6% = 100%

mass of N = 14g
mass of H = 1g

17,6% H = 17,6g H
82,4% N = 82,4g N

17,6g : 1g = 17,6 moles of H
82,4g : 14g = 5,89 moles of N

N : H = 5,89 : 17,6 ||:5,89
N : H = 1 : 2,99≈3

the empirical formula of the compound = NH₃ (ammonia)

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