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Elis [28]
3 years ago
6

There are several different models that represent

Chemistry
2 answers:
yKpoI14uk [10]3 years ago
8 0

Answer:

The correct answer is A) a structural formula

Explanation:

Hope this helps! :)

marishachu [46]3 years ago
3 0

Answer:

a structural formula

Explanation:

A structural formula simply shows the arrangement of atoms on a compound or molecule.

They are mostly used in representing hydrocarbons.

Through a structural formula we can give name to a compound.

For example, the compound given is called Propane, an aliphatic hydrocarbon with 3-carbon atoms.

The bond relationship connecting the species are also shown in this designation.

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Ethanol (c2h5oh) melts at -114°c. the enthalpy of fusion is 5.02 kj/mol. the specific heats of solid and liquid ethanol are 0.9
maria [59]
You'll want to add three amounts of heat. 

(1) Specific heat of lowering the temperature from -135°C to the melting point -114°C
(2) Latent heat of fusion/melting
(3) Specific heat of elevating the temperature from -114°C to -50°C

(1) E = mCΔT = (25 g)(0.97 J/g·°C)(1 kJ/1000 J)(-114 - -135) = 0.509 kJ
(2) E = mΔH = (25 g)(5.02 kJ/mol)(1 mol/46.07 g ethanol) = 2.724 kJ
(3) E = mCΔT = (25 g)(2.3 J/g·°C)(1 kJ/1000 J)(-50 - -114) = 3.68 kJ

<em>Summing up all energies, the answer is 6.913 kJ.</em>
7 0
3 years ago
How can a large body of water, such as an ocean, influence climate?
Nat2105 [25]
ANSWER- ocean winds can carry moisture with then mmm and can bring rain.

Hope this helps leave a thanks!
6 0
2 years ago
Read 2 more answers
Which statement describes a chemical property of oxygen
grin007 [14]
Oxygen can combine with a metal to produce a compound
8 0
3 years ago
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Will make brainliest
Dafna11 [192]

Answer:

Boron

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

For example

In given atomic model we can see that there are five electrons out side the nucleus it means this atomic model is of that element which have atomic number 5 and it is boron.

It has 5 electron 5 proton and 6 neutrons.

It means its atomic number is five and mass number is 5+6 = 11

8 0
3 years ago
What type of element is most abundant: metals, nonmetals, or metalloids?
AnnyKZ [126]
Metals are the most abundant
7 0
3 years ago
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