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rosijanka [135]
3 years ago
9

A small bottle of water is left on the shore of a very large lake on an extremely cold winter night. What is most

Chemistry
1 answer:
marta [7]3 years ago
4 0

Answer:

A

Explanation:

Because it is a cold winter night making the lake freeze and the bottle is already solid.

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how is substitution reaction in alkanes different from dehydrogenation reaction since both involve removing a hydrogen atom from
Ilia_Sergeevich [38]

Answer:

See Explanation

Explanation:

A substitution reaction means the replacement of one or more hydrogen atoms in an alkane by another atom or group. It does not introduce a double bond into the product. The product retains single bonds between the species present.

For instance;

CH4 + Cl2 -------> CH3Cl +HCl

is a substitution reaction

Dehydrogenation is the process of removing two hydrogen atoms from a saturated compound compound thereby yielding an unsaturated product.

E.g

C2H6 --------->C2H4 + H2

The key difference is that substitution reaction yields a saturated product while dehydrogenation yields an unsaturated product.

8 0
3 years ago
Chloroform, formerly used as an anaesthetic and now believed to be a carcinogen, has a heat of vaporization ΔHvaporization = 31.
djverab [1.8K]

Answer:

Chloroform is expected to boil at 333 K (60 ^{0}\textrm{C}).

Explanation:

For liquid-vapor equilibrium at 1 atm, \Delta G^{0} = 0.

We know, \Delta G^{0}=\Delta H^{0}-T\Delta S^{0} , where T is temperature in kelvin scale.

Here both \Delta H^{0} and \Delta S^{0} are corresponding to vaporization process therefore T represents boiling point of chloroform.

So, 0=(31.4\times 10^{3}\frac{J}{mol})-[T\times (94.2\frac{J}{mol.K})]

or, T = 333 K

So, at 333 K (60 ^{0}\textrm{C}) , chloroform is expected to boil.

6 0
3 years ago
Read 2 more answers
The ionization energy of chlorine is lower than the ionization energy for
photoshop1234 [79]

Answer: Fluorine.

Explanation:

6 0
3 years ago
At what temperature will 1.50 moles of nitrogen exert a pressure of 1.072 atm in a 20.0 L cylinder?
nlexa [21]

Answer:

174 K

Explanation:

To answer this question we will use the PV=nRT formula, where:

  • P = 1.072 atm
  • V = 20.0 L
  • n = 1.50 mol
  • R = 0.082atm·L·mol⁻¹·K⁻¹
  • T = ?

We <u>input the data</u> given by the problem:

  • 1.072 atm * 20.0 L = 1.50 mol * 0.082atm·L·mol⁻¹·K⁻¹ * T

And <u>solve for T</u>:

  • T = 174 K

Meaning the correct answer is the fourth option, 174 K.

3 0
3 years ago
Newsela what is a chemical reaction
kramer

Answer:

A chemical reaction is a process in which the chemical bonds of a substance are broken or rearranged. One or more substances are formed with different properties because of this chemical reaction. Examples of chemical reactions are rust, combustion, and oxidation.

4 0
3 years ago
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