Where would u expect a warmer environment, Mexico or Canada why?

I don’t know the answers to these pls help

stepladder [879]

Answer:

4. Option C. Pentane.

5. Option D.

Explanation:

4. Hydrocarbons are compound containing carbon and hydrogen only. Hydrocarbons are said to be saturated when they contain only carbon to carbon single bond. All alkanes are saturated hydrocarbon.

The correct answer is pentane.

5. Isomerism is the phenomenon whereby two or more compounds have the same molecular formula but different structural patterns. The compounds involved are called isomers.

A careful observation of the diagram above shows that only option D satisfied the definition of Isomerism as the two compound both have the same molecular formula as C3H8O but different structural patterns.

Note: option C does not contain isomers as Isomerism can not occur in a compound having just 1 carbon atom.

5 0

3 years ago

Somebody knows a good explanation for quantic numbers in chemistry???

taurus [48]

Answer:

No I don't.

Explanation:

LOL!!

5 0

3 years ago

Balance the following

olga55 [171]

Answer:

Your coefficients (the numbers in front of the molecule) will be the following from left to right.

1. 1 - 2 - 1 - 2

2. 2 - 1 - 2 - 2 - 1

3. 2 - 4 - 1

4. 2 - 4 - 3

5. 2 - 2 - 2 - 1

6. 1 - 1 - 1

7. 2 - 1 - 2

8. 3 - 1 - 2 - 3

9. 3 - 1 - 2 - 3

10. 2 - 1 - 1 - 1

Explanation:

To balance this equations first count how many times an element is on each side and then see what needs to be changed in order to balance them.

8 0

1 year ago

Which of the following abilities is NOT a physical property of matter?

Morgarella [4.7K]

Answer:

Ability to react chemically with other substances is not a physical property.

Explanation:

The ability to dissolve in other substance can be both physical and chemical property.

It depend upon the type of solute, solvent and reaction between them.

For example, if NaCl is dissolved in water it gives sodium and chloride ions which are behaving different from the original compound. it will be chemical change but if water is evaporated it will give back sodium chloride and than it will be a physical change.

But if dissolved substances make the mixture not compound it will than a physical change, and solubility will consider a physical property.

Physical properties:

The properties which are not associated with change in chemical composition are called physical properties.

Example

Density, color, hardness, conductance, melting point, boiling points all are physical properties.

Chemical properties:

The properties which are associated with change in chemical composition are called chemical properties.

Example:

Toxicity, flammability, heat of combustion etc.

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

The reaction of Hydrogen and oxygen:

H 2 (g) + O 2 (g) -------------------------------------> 2H 2O (l)

8 0

3 years ago

If you conduct a single displacement reaction and you observe bubbles, what are some possibilities of the composition of those g

pickupchik [31]

Answers:

c. oxygen gas

d. chlorine gas

e. hydrogen gas

Justification:

Single displacement reactions are those reactions in which the atoms of one element substitute (replace or displace) the atoms of other element in a compound.

The representación of this ind of reactions is:

A + BX → AX + B: the atoms of the element A displace the atoms of the element B in the compound BX. As result, the element B stands separated after the reaction.

The conditions for a single displacemente reactions are:

One single element react with a compound
The reactant single element will form part of a new compound
One single element is removed from the compound
The one single element removed from the compound stands as a separated product.
It is a more active element displaces a less active element from the compound.

In the giiven statement, the element displaced will be as a gaseous product.

Ammonia is not a single element, but the compound with the formula NH₃, so it is not the result of a single displacement reaction, and it is not a possibility (discarded)

Air is not either a single element nor a compound, so it is not the result of a single displacemente reaction, and it is not a possibility (discarded).

Since oxygen is one of the most reactive non-metal elements, oxygen gas is usually the result of a decomposition reaction and not of a single displacement reaction.

Decomposition reactions are those in which a single compound breaks down into two or more simpler substances (elements and/or compounds). Some examples of decompositon reaction in which oxygen gas evolves as a product are:

The decomposition of water into hydrogen and oxygen gases.
The decomposition of hydrogen peroxide to form oxygen gas and water.
The decomposition of solid potassium chlorate to form solid potassum chloride and oxygen gas.

Nevertheless, fluorine is more active than oxygen, and so it can oxidises water according to this single replacement reaction:

2F₂ + 2H₂O → 4HF + O₂↑

As you see, fluorine displaces oxygen, so this is one of the right choices.

Regarding chlorine, being it less active than fluorine (fluorine is the most active halogen and the most active gas) you can predict without doubt that it can be displaced by flouorine. And so, chloringe gas is a right choice too.

The evolution hydrogen gas is a typical example of single displacement reactions and can be seen in this example:

2Li(s) + 2H₂O → 2LiOH + H₂(g)↑

Hence, hydrogen gas is one of the right options.

Conclusion: we have tested the choices one by one and the result is that the possibilities of the composition of those gas bubbles are:

c.oxygen gas

d.chlorine gas

e. hydrogen gas

5 0

4 years ago