CHEMISTRY HIGH SCHOOL

Nonrenewable energy sources _____.can be quickly replenished
are easily recycled
can eventually be used up
never cause pollution

Answers

Answer 1
Answer:

Non-renewable energy sources CAN EVENTUALLY BE USED UP.

Non renewable energy sources refer to those energy sources that can not be replenished. Once they are used up, new one can not be formed or produced, this is because they can only be formed by natural processes and these processes take millions of years to occur. Examples of non renewable energy sources are: coal, natural gas and oil. All the fuels obtained from fossils are non renewable in nature.
Answer 2
Answer:

Answer:

The correct answer is option C, can eventually be used up

Explanation:

Nonrenewable energy sources are those resources which if once used cannot be re used again.  

For example – Coal, petroleum(petrol & diesel), fossils, natural gas etc.  

These resources cannot be replenished if once they are consumed as they take millions of year to form.

Also all these resources are made up of hydrocarbons thus they produce polluting gases on burning except natural gas.  

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The science that deals with the study of the stuff that makes up the universe is chemistry??

Answers

I believe that its chemistry

Digestion breaks down _____into simpler substances that your body can use for raw materials and energy

Answers

The perfect word to fill the blank is carbohydrates. Digestion breaks down carbohydrates into simpler substances that your body can use for raw materials and energy. Carbohydrates are from the food we eat and are used in the body to produce and supply energy.

Compounds that do not conduct an electric current in either aqueous solution or when molten are referred to as _____.a. electrolyte
b. nonelectrolyte
c. not listed
d. ionic

Answers

The answer is B. Nonelectrolyte. Nonelectrolytes are substances that do not dissociate into ions when dissolved in a solution. In some cases, they dissociate into molecules rather than ions. They are usually polar covalent substances such as sucrose (C12H22O11). Nonelectrolytes are considered to be poor conductors of electricity.

What would the pressure be if the can were heated to 1270∘C?

Answers

According to Gay -Lussac's law, the pressure of the can if it is heated to 1270°C is 4295.53 mm Hg.

What is  the Gay-Lussac's law?

It is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.

The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .If a graph of pressure versus temperature is plotted it is a straight line which passes through the origin .

The equation is given as, P₁/T₁=P₂/T₂

On substitution of values as ,P₁=760 mm Hg,T₁=273 K,T₂=1543 K

P₂=1543×760/273=4295.53 mm Hg.

Thus, the pressure of gas is 4295.53 mm Hg if it is heated up to 1270°C.

Learn more about Gay-Lussac's  law,here:

brainly.com/question/2683502

#SPJ2
P1/T1=P2/T2
760/303=P2/1428 
P2= 760*1428/303
P2=3,582mmHg

Which of the following is not an effective way to manage forests and trees?a. planned harvesting
b. planting replacements
c. clearcutting
d. soil maintenance

Answers

The correct answer for the question that is being presented above is this one: "c. clearcutting." Clearcutting, clearfelling, or clearcut logging is a forestry/logging practice in which most or all trees in an area are uniformly cut down. Clearcutting in itself is not an effective way to manage forests and trees.

Answer:

C

Explanation:

How can we determine the atomic mass of an element which posseses isotopic forms?​

Answers

Answer: Here are the steps to determine the atomic mass of an element with isotopic forms:

1. Identify the isotopes: Determine the different isotopic forms of the element. Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons.

2. Determine the relative abundance: Find the relative abundance of each isotope. This information is typically given as a percentage or decimal. The relative abundance represents the proportion or percentage of each isotope in a naturally occurring sample of the element.

3. Obtain the mass of each isotope: Identify the mass of each isotope. This is usually given in atomic mass units (u) or grams per mole (g/mol).

4. Multiply the mass of each isotope by its relative abundance: Multiply the mass of each isotope by its relative abundance (expressed as a decimal). This calculates the contribution of each isotope to the overall atomic mass.

5. Sum the contributions: Add up the contributions of each isotope to obtain the atomic mass. This sum represents the weighted average of the masses of all the isotopic forms, taking into account their relative abundance.
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