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3 years ago

Which of the following is NOT a characteristic of most ionic compounds?

Chemistry

2 answers:

jekas [21]3 years ago

7 0

What are the answer choices???

LiRa [457]3 years ago

6 0

A. When melted, they conduct an electric current.

B. They have low melting points.

C. They are solids.

D. They are composed of metallic and nonmetallic elements.

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What is the total number of protons in the nucleus of calcium -42?

amm1812

Since the atomic number of calcium is 20. The number of protons is also 20.

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2 years ago

How many mols are present in the a sample of silver nitrate which has 5.3x10^24 molecules.

Westkost [7]

Answer: 5.3 x 10^24 formula units of silver nitrate is equivalent to 8.8 moles of silver nitrate. Silver nitrate is an ionic compound, therefore, its representative particle is called a "formula unit" instead of molecule. For every mole of a substance, we know that there are 6.022 x 10^23 representative units of that substance. The amount of particles in one mole of substance is called Avogadro's number.

Further Explanation:

We can convert from number of representative particles to moles using the formula:

$\boxed {no. \ of \ moles \ = \ ( given \ no. \ of \ particles) \ (\frac{1 \ mole}{\ 6.022 \ x 10^{23} particles})}$

For this problem, we can calculate the number of moles by plugging in the given values to the equation above,

$no. \ of \ moles \ = (5.3 \ x \ 10^{24} \ formula \ units \ AgNO_{3}) \ (\frac{1 \ mole \ AgNO_{3}}{6.022 \ x 10^{23} \ formula \ units AgNO_{3}}) \\\\\boxed {no. \ of moles \ AgNO_{3} \ = \ 8.8 \ moles}$

Learn More

Learn more about representative particles brainly.com/question/8969313
Learn more about Avogadro's number brainly.com/question/229300
Learn more about mole conversions brainly.com/question/1370888

Keywords: moles conversion, Avogadro's number

5 0

2 years ago

Sublimation and boiling both happen at the surface of the substance. a. True b. False

Burka [1]

This statement is: False

Boiling is vaporization that occurs both below and at the surface of the liquid.
However, evaporation happens at the surface of the substance.

So, if you need to correct this statement, the correction would be:
Sublimation and evaporation happen at the surface of the substance.

7 0

2 years ago

How does the structure of a mineral affect its properties?

Softa [21]

Purely for crystalline structure, "twinning" or repetition of crystal forms can bring about a striated texture on the mineral. Crystal defects and chemical impurities can alter the physical and electrical properties of a mineral. Some minerals can exist in different crystal forms and exhibit "polymorphism." The range in crystal structure can change the mineral's hardness, strength, solubility, electrical properties, melting points, etc.

4 0

3 years ago

Charles's Law of V/T = k were represented in graphical form, what it would look like?j

loris [4]

As far as I understand, you have to plot t(v) = v/k.
According to this, you have to use a form like that $y(x)=mx+b$ , in which $(x,y)=(V,T)$ .
Then you can see that the vertical-intercept is zero therefore the gradient should be is 1/k.
Do hope you will find my both answer helpful and useful. Regards!

7 0

2 years ago

Read 2 more answers