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Zolol [24]
3 years ago
7

Describe the composition of a molecular compound. What are two major characteristics of molecular compounds?

Chemistry
1 answer:
miv72 [106K]3 years ago
4 0

Answer:

A molecular compound is composed of two or more non metallic elements that are held together by covalent bonds.

The two major characteristics of molecular compounds are;

1.) They are held by covalent bonds

2.) They generally have poor conductivity

Explanation:

A molecular compound is one where two or more molecules come together to form a compound. Unlike ionic compounds that combine by the transfer of electrons, molecular compounds form by sharing electrons. The pairing of the electrons is what holds the molecules together and is known as covalent bonding.

A molecular compound has various characteristics, some of which are;

- Generally low melting and boiling points

- Soft solid forms

- Low enthalpy of fusion and vaporization.

But the two major characteristics of molecular compounds are;

1.) They are held together by covalent bonds.

The elements in a molecular compound share their electrons by having their atoms bond chemically to each other.

2.) They generally have poor conductivity

Molecular compounds do not conduct electricity and heat properly. Because they are formed by sharing electrons, they usually have no free electrons left to conduct electricity.

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Alexus [3.1K]

Answer: For a. Mass number for the particle is 0.

For b. The charge on the particle is -1.

For c. Another name for \beta- particle is electron.

Explanation:

Beta- minus decay is the decay process in which beta-particle is emitted. The mass number of the nuclei remains same and the mass number of the particle is 0. The charge on the particle is -1 and the emitted particle is also called as electron.

_Z^A\textrm{X}\rightarrow _{Z+1}^A\textrm{Y}+_{-1}^0\beta

For a. The mass number for the particle is 0.

For b. The charge on the particle is -1.

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4 0
3 years ago
Ammonia reacts with oxygen according to the equation: 4 nh3 (g) + 5 o2 (g) → 4 no(g) + 6 h2o(g) δhrxn= −906 kj calculate the hea
Masteriza [31]
First, we need to get the number of moles of NH3:
no.of moles = mass of NH3 / molar mass
when we have the mass= 155g & the molar mass of NH3 = 14+(1x3) = 17 g/mol
∴ no.of moles = 155g/17mol/g
                        = 9.12 moles 
∴ the heat (in Kj) = no.of moles of NH3 * (ΔHrxn/4moles NH3)
                            = 9.12 moles * (-906 / 4mol NH3)
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5 0
3 years ago
What is the main idea and Detail/Evidence of Light microscopes​
Vesna [10]

hi I I  don’t know

Explanation:

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7 0
3 years ago
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14. A child's lungs can hold 2.20 L. How many grams of air do her lungs hold at a pressure of
Alenkasestr [34]

Answer:

Explanation:

Use the gas equation: PV=nRT

P=pressure

V=Volume

R= gas constant of around 8.31 J/K/mol

T=temperature

n= number of moles

To find n, Rearrange:

n=PV/RT

102kPa= 102,000 kilo pascals which standard form is 102 x 10^3

Convert Celsius to kelvin, which you just add 273.15. So:

37+273.15=310.15 K round to a whole number is 310 K

Sub in all numbers to calculate the mol

n= 102 x 10^3 x 2.20 x 10^3/ 8.31 x 310 (cross out 10^3 as this will make a big number)

n=102 x 2.2/8.31 x 310 =0.087 mol

We know 1 g=29 moles

Multiply 29 moles with 0.087 to find the grams

29*0.087=2.523, which to one d.p is 2.5 g

Hence, the child's lung will hold 2.5 g of air.

Hope this helps you  :)

Have a nice day!!

5 0
4 years ago
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ella [17]
<span>Solids have molecules that are held tightly together in close bonds. (positive bonded to a negative) They can bend or vibrate but still stay bonded together closely. Solids have very little kinetic energy. </span>

<span>Liquids have molecules that are held in looser bonds. They move more freely and more randomly that in a solid. It is common for the bonds to be flexible enough to slide over each other. </span>

<span>Gasses have the loosest bond of any state of matter. The loose bonds allow the molecules to move freely and far apart. A gas has the greatest kinetic energy of any state of matter,</span>
8 0
3 years ago
Read 2 more answers
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