CHEMISTRY HIGH SCHOOL

Which two organic compounds share a functional group?

Answers

Answer 1
Answer: Both Octane and Propane have the same functional group (Alkanes)
Both Ethene and Propene have the same functional group (Alkenes)
Both Ethyne and Butyne have the same functional group (Alkynes)
Both Ethanol and Propanol have the same functional group (Alcohol)
Both Ethanoic Acid and Propanoic Acid have the same functional group                    (carboxylic acid)

Related Questions

After being thoroughly stirred at 10.°C, which mixture is heterogenous?(1) 25.0 g of KCl and 100. g of H2O(2) 25.0 g of KNO3 and 100. g of H2O(3) 25.0 g of NaCl and 100. g of H2O(4) 25.0 g of NaNO3 and 100. g of H2O
What is true of an Arrhenius acid?a. An Arrhenius acid donates OH- ions.b. An Arrhenius acid donates H+ ions.c. An Arrhenius acid accepts H+ ions.d. An Arrhenius acid accepts OH- ions.
A)1.5 km + 4.32 kmb) 4.6 cm x 1.586 cm
Stars are formed from interstellar clouds because ofthe Law of Entropy the Law of Universal Gravitation the Law of Stellar Evolution the Law of Propulsion
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What clues indicate a rusty bike has gone through a chemical change

Answers

That bike is certainly made of iron. And when iron comes in contact with oxygen, it rusts. Well, a chemical change occurs! It is rusty, the red marks clearly show that - so, this is the evidence that the bike has gone through a chemical change. There is plenty of oxygen in the air so the bike has to rust.
That the color isn't the same because it has rust, it will be now dark red or even green.

What is an ionice equation with phases for the following chemical reaction: 2HBr(aq)+BaOH2(aq)-->2H2O(l)BaBr2(aq)?

Answers

Molecular reaction 

2HBr(aq) Ba(OH)2 (aq) = 2H2O (l) BaBr2(aq) 


Ionic equation 

2H 2Br- Ba 2 2OH- --------> Ba 2 2Br - 2H2O 

Net ionic equation 

2H (aq) 2OH- (aq)- ---------> 2H2O (l)

What causes the colors observed during a flame test

Answers

By using flame test we can identify the elements because colors which are given by elements with flame test are unique.

During the flame test, the electrons of the atom which are in ground state absorb energy and go to upper level. This is called electron excitation. Excited electrons are unstable. Hence, they come back to the ground state by emitting the energy as photons.If that released energy has a frequency which belongs to visual light, then that wave gives a color.

The colors observed during a flame test are caused by the presence of certain metal ions. When these metal ions are heated by a flame, the electrons in their outer energy level get excited and move to higher energy levels. As they return to their original energy levels, they release energy in the form of light, which we perceive as different colors.

During a flame test, the colors observed are caused by the presence of certain metal ions. When these metal ions are heated by a flame, the electrons in their outer energy level get excited and move to higher energy levels. As they return to their original energy levels, they release energy in the form of light, which we perceive as different colors.

For example, when a copper compound is heated, it emits a green color. This is because copper ions are responsible for this color. Different metal ions will emit different colors, allowing us to identify them by their characteristic flame color.

Therefore, the colors observed during a flame test are a result of the specific metal ions present in the substance being tested.

Learn more about causes of colors in flame test here:

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Balance this equation please.

Answers

2K + 2H2O = 2KOH + H2
2K + 2H2O = 2KOH + H2  Actually Really what That other guy said

17 Two substances in a mixture differ in density and particle size. These properties can be used to(1) separate the substances(2) chemically combine the substances
(3) determine the freezing point of the mixture
(4) predict the electrical conductivity of the mixture

Answers

Answer:The correct answer is option (1).

Explanation:

Density is defined as mass of substance present in the unit volume of the substance.

Density can be used to separate two substance from their mixture. Substance with lower density will place itself on the top of the substance with higher density, And in order to distinguish those two substance from each other one can easily observe the boundary among those substance.
If they're different sizes and densities, you are able to separate the substances. 

If 455-mL of 6.0 m HNO3 is used to make a 2.5L dilution, what is the molarity of the dilution

Answers

2.5 L * 1000 = 2500 mL

C₁ * V₁ = C₂ * V₂

6.0 * 455 = C₂ * 2500

2730 = C₂ * 2500

C₂ = 2730 / 2500

C₂ = 1.092 M

hope this helps!
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An atomic nucleus must contain at least one neutron or else the force of attraction of the electron(s) will collapse the atom. True/false
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