Isomers have different molecular formulas. t/f

Plastics are used in almost all spheres of life for diverse purposes because of their beneficial properties. The uses of plastics include the following:

1. Plastics are used in the manufacturing of various items that we use in our homes such as television, phones, radio, vacuum cleaners, chairs, bowls plates, tables, etc.

2. Plastics are used in the food industry for packaging of foods.

3. Plastics are used in the transport industry for various purposes in the manufacture of cars, trains, aeroplanes, hydroplanes, ships, satellites, etc.

4. Plastics are also used in the medical and pharmaceutical industries for various purposes.

Manufacturers are able to use plastics for various purpose because of their properties, which include: resistance to corrosion, resistance to chemicals, low thermal conductivity, color variability, high strength to weight ratio, resistance to shock, durability, low toxicity, ready availability, cheap, etc.

Answer:

Exothermic reaction

Explanation:

Notice that the energy component is located on the right side of the reaction. The right side is always known as the product side. Whenever energy is located there, the reaction is known to give off energy - essentially, we can say that energy is a product, as well. Reactions that give off energy are known as exothermic reactions.

On the other hand, if the energy component was located on the left side, or reactant side, of the equation, it would be known as an endothermic reaction.

Here, it's exothermic.

Hope this helps!

Answer: Heat equation

Answer:

The correct answer is option C.

Explanation:

Double displacement reaction is defined as the reaction in which exchange of ions takes place to give a product.

Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction.

From all the given options the reaction which is classified as Double displacement reaction is :

Where as other reactions are the examples of Single displacement reaction.

Answer:

Spontaneous at ALL Temperatures: Negative enthalpy change and positive entropy change

I promise this is 100% correct. I just took the Honors Entropy quiz and I got the question correct.

The other answer provided by the verified user Hagrid is incorrect.

Answer:

The prefix is but-.

Explanation:

"A molecule of a compound contains a total of 10  hydrogen atoms and has the general formula CnH2n+2.Which prefix is used in the name of this compound?

A) but- B) dec- C) oct- D) pent"

Hydrocarbons are compounds that contain only carbon and hydrogen. They are divided into aliphatic and aromatic hydrocarbons.

In aliphatic hydrocarbons, carbon atoms form open chains and are classified as alkanes, alzenes or alkenes, and alcines or alkynes.

Alkanes have only simple bonds between carbon atoms. The general formula for aliphatic (straight-chain) alkanes is CₙH₂ₙ₊₂.

Alkenes are hydrocarbons that have a carbon-carbon double bond in their molecule, and that is why they are called unsaturated. The generic formula is CₙH₂ₙ.

Alkynes have a triple bond between two carbon atoms. Its general formula is CₙH₂ₙ.

So in this case, you know that it is an alkane. To name an alkane, you must know the number of carbons n. For that you know that the compound has 10 hydrogens. That is, 2n + 2 must be 10. Then you can calculate the value of n:

2*n+2=10

2*n=10 -2

2*n=8

n=8÷2

n=4

So, in this case, the prefix is but-.