Why are some energy resources more expensive to use than others?

Answers

Answer 1
because they are more effective and reliable

Related Questions

Which instrument is used to measure mass?

Answers

Answer:

Balance

Explanation:

hope i helped

What is the temperature change that 725 g of aluminum will undergo when 2.35 x 104
J of thermal energy are added to it?

Answers

Answer:

36°C

Explanation:

Given parameters:

Mass of aluminum = 725g

Quantity of heat  = 2.35 x 10⁴J

Unknown:

Temperature change  = ?

Solution:

To solve this problem, we simply use the expression below:

  The quantity of energy is given as:

          Q  = m C Δt

Q is the quantity of energy

m is the mass

C is the specific heat capacity of aluminum  = 0.9J/g°C

Δt is the change in temperature

  The unknown is Δt;

             Δt  = [tex]\frac{Q}{mc}[/tex]    = [tex]\frac{2.35 x 10^{4} }{725 x 0.9}[/tex]    = 36°C

name a metal that would be magnetic

Answers

A metal that would be magnetic is nickel

What type of compound is AIN?

Answers

Answer:

aluminum nitride

Explanation:

i think

What will be the mass of 9.95 liters of propane gas (C3H8) at STP?

Answers

Answer:

19.5g

Explanation:

Given parameters:

Volume of propane gas = 9.95L

Unknown:

Mass of propane gas =  ?

Solution:

To solve this problem, find the number of moles first.

    At STP;

        22.4L of gas makes up 1 mole

         9.95L of gas will have a [tex]\frac{9.95}{22.4}[/tex]    = 0.44mole

So;

   Mass of propane gas  = number of moles x molar mass

Molar mass of propane  = 3(12) + 8(1)  = 44g/mol

    Mass  = 0.44 x 44  = 19.5g

Need help balancing equations please.

Answers

Answer:

A, 4,3,2

B, 1,1,2

C, 1,1,1,2

why do astronauts on the moon seem like they're "Walking on springs" while on earth we are firmly attached to the ground

Answers

Because of the moon's considerably lower gravity. The moon's gravity is about 1/4 as strong as the earth's gravity.
Our muscles a built to carry us on the earth. The astronauts are used to walking on earth so when they push forward with their legs they tend to use the same amount of energy which is 4 times more than needed. That push causes them to rise, Newton's second law

If I have one mole of sulfur, how many grams would it weigh?

Answers

Answer:

32.06 grams

Explanation:

One mole of sulfur is equal to 32.06 grams of sulfur.

Answer:ok

Explanatio

heres the answer 32.065 grams because 1 mole is equal to 1 moles Sulfur

I'll give brainliest for a legitimate answer

Can someone give me a legitimately good idea for a chem honors project. It's due May or something so no rush at all but like maybe just an idea. It needs to take at least ten hours total. So if you ever had to do one maybe I could get the idea for it? Something nature related. I live in a super nature-y environment so anything to do with analyzing some sort of chemistry in nature, I don't know, I just need an idea. Thanks.

Answers

Answer:

I don't know if this is what you are looking for but maybe making paints out of things you find outside??? sry if this isn't what you were looking for

15. In complete sentences, describe how electronegativity is related to polarity.

Answers

Explanation:

The absolute value of the difference in electronegativity (ΔEN) of two bonded atoms provides a rough measure of the polarity to be expected in the bond and, thus, the bond type. When the difference is very small or zero, the bond is covalent and nonpolar. When it is large, the bond is polar covalent or ionic.

Electrons in a polar covalent bond are shifted toward the more electronegative atom; thus, the more electronegative atom is the one with the partial negative charge. The greater the difference in electronegativity, the more polarized the electron distribution and the larger the partial charges of the atoms.

Answer:

The person above me is correct. Electronegativity relates to polarity by describing the attraction of electrons for an element. For example, Fluorine is most electronegative, so it has a high polarity. Polarity means a charge of hogging electrons. So yeah. There you go.

Explanation:

Although chemical digestion occurs throughout the digestive system, it mostly occurs in the A esophagus and stomach
B
liver and gall bladder
C
liver and pancreas
D
stomach and intestines

Answers

D: stomach and intestines :)

How much light would be absorbed by the different drinks?

Drink A would absorb more light than Drink B.

Answers

It three rawrrrrrrrrrrrrr

a container with a volume of 2.5L contains air at a pressure of 0.5 atm. if the volume is reduced to 1.5L at constant temperature, what will be the resulting pressure of the air inside

Answers

Answer:

Final pressure of the air inside is 0.83atm

Explanation:

Boyle's law is the gas law that relates the change in volume when pressure change at constant temperature and vice versa. The equation is:

P₁V₁ = P₂V₂

Where P is pressure and V is volume of 1, initial state and 2, final state of the gas

Replacing:

P₁ = 0.5atm

V₁ = 2.5L

P₂ = ?

V₂ = 1.5L

P₁V₁ = P₂V₂

0.5atm*2.5L = P₂*1.5L

0.83atm = P₂

Final pressure of the air inside is 0.83atm

If 50.0g of kcl reacts with 50.0 g of 02 to produce KCLO3 according to the following equation, how many grams of kclo3 will be formed

Answers

Answer:

Mass = 82.11 g

Explanation:

Given data:

Mass of KCl = 50.0 g

Mass of O₂ = 50.0 g

Mass of KClO₃ produced = ?

Solution:

Chemical equation:

2KCl + 3O₂   →     2KClO₃

Number of moles of KCl:

Number of moles = mass /molar mass

Number of moles = 50.0 g/ 74.5 g/mol

Number of moles = 0.67 mol

Number of moles of O₂:

Number of moles = mass /molar mass

Number of moles = 50.0 g/ 32 g/mol

Number of moles = 1.56 mol

Now we will compare the moles of oxygen and KCl.

          O₂          :          KClO₃

            3           :             2

           1.56       :          2/3×1.56 = 1.04 mol

        KCl          :          KClO₃

            2           :             2

           0.67       :         0.67

Number of moles of KClO₃ formed by KCl are less thus, it will act as limiting reactant.

Mass of KClO₃:

Mass = number of moles × molar mass

Mass = 0.67 mol ×122.55 g/mol

Mass = 82.11 g

Which of the following is true about homogeneous mixtures?
They consist of two or more phases; They are always liquids; They are known as solutions; They have compositions that never vary

Answers

Answer:

Option 3: They are known as solutions

Explanation:

Examples of homogenous mixtures include:

soapy watertea or coffee that's breweda mixture of water and alcoholbloodairquartznitrogen

I hope this helps :)

How is agriculture depended on industries​

Answers

Answer:

The interdependence of agriculture and industry helps the development of both the sectors. The most important aspect of this inter dependence is that the products of one serve as important inputs for the other. Growth of one sector, thus means ample supply of inputs for the other.

Explanation:

Pleas help with 2 and 4 for brainliest

Answers

mass of pentane : = 30.303 g

moles of Al₂(CO₃)₃ : = 0.147

Further explanation

Given

1. Reaction

C₅H₁₂+8O₂→6H₂O+5CO₂.

45.3 g water

2. 2AlCl₃ + 3MgCO₃ → Al₂(CO₃)₃ + 3MgCl₂

37.2 MgCO₃

Required

mass of pentane

moles of Al₂(CO₃)₃

Solution

1. mol water = 45.3 : 18 g/mol = 2.52

From equation, mol ratio of C₅H₁₂ : H₂O = 1 : 6, so mol pentane :

= 1/6 x mol H₂O

= 1/6 x 2.52

= 0.42

Mass pentane :

= mol x MW

= 0.42 x 72.15 g/mol

= 30.303 g

2. mol MgCO₃ : 37.2 : 84,3139 g/mol = 0.44

mol Al₂(CO₃)₃ :

= 1/3 x mol MgCO₃

= 1/3 x 0.44

= 0.147

help me pleeeeeeeaaaaassseeeeee

Answers

Answer:

okay

Explanation:

I can help u u can ask question .....

Blank + blank < blank = nothing :)


The citizens of a town are aware of climate change, and they want to make changes to control it. One change they consider is replacing the nearby thermal power plant with a hydroelectric plant. If they want to make sure this change will help to slow climate change, which question should they ask?

Answers

Answer: How hydroelectric plant is better over thermal power plant in creating less pollution?

Explanation:

The thermal power plant utilizes the coal as a fuel. The heat energy so produce after burning coal is used for generating electrical energy. The burning of the coal results in the production of pollutants. The carbon dioxide is also a chief pollutant of coal burning. This can pollute the air.

The hydroelectric plant is better than thermal power plant in the sense no fuel is required for this purpose the energy from water currents are used for generating electrical energy.  

So, the citizens should research about hydroelectric plant and try to know how it is efficient in providing routine energy supply and impact it exerts on the environment if used as a source of energy generation.

What are the main organs of the muscular system?

Answers

The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture and circulates blood throughout the body.

Answer:

Skeletal, cardiac muscles.

Explanation:

It helps move the body around. Your welcome :)

60\15A=
help help help help help help help help help help​

Answers

this is just 60 divided by 15, which is 4

so your answer is 4A :)

Answer:

60 divided by 15? That's 4 if that's what you're asking

what is another name for producer why are they called this​

Answers

Answer:

Autotrophs

Explanation:

They are responsible for the production of food. Root words "auto" for self and "troph" for food.

A metal ion (X) with a charge of 2+ is attracted to a nonmetal ion (Z) with a charge of 3-.Which formula represents the resulting compound?

Answers

Answer:

X₃Z₂

Explanation:

A metal ion (X) with a charge of 2+  =  X²⁺

nonmetal ion (Z) with a charge of 3-   = Z³⁻

In a neutral compound, the charges but balance each other to remain neutral. However in this case, the charges are not balanced.

A simple way to make the charges balance is by tweaking the number of the ions present in the compound.

We do this by multiplying the metal ion with 3 and the non metal ion by 2.

That way we have;

Metal ion = 3X2⁺   (Total charge - 6⁺)

Non metal ion = 2Z3⁻  (Total charge -  6⁻)

The charges are now balanced. The formular of the compound is;

X₃Z₂

Energy of motion is called ________energy *

Answers

Kinetic energy
.............

Answer:

Kinetic - Kinetic energy is the energy of motion

Explanation:

Thermal energy - heat energy

Potential energy - energy that is stored

Hope this helped!

Have a supercalifragilisticexpialidocious day!

how many grams of NH3 can be prepared from 77.3 grams of N2 and 24.2 grams of H2?

Answers

Answer:

how many grams of NH3 can be prepared from 77.3 grams of N2 and 24.2 grams of H2?

=80.4 g

Explanation:

I think.

how does an airplane’s kinetic energy and potential energy change as it takes off and lands? How does this energy change relate to the law of conservation of energy?

Answers

Answer: As the airplane goes higher, the mechanical energy is changed into gravitational potential energy. While flying, some energy is lost through drag to thermal (heat) energy and sound energy. Some is also lost as the plane makes the air around it move. ... As speed and height decrease, kinetic and potential energy decrease.

Explanation:

Hope this help


Calculate the mass of 4 moles of CuCl2.

Answers

So the molar mass of CuCl2 is 134.45
You would add the mm of Cu and of 2 chlorine’s to get (bc Cl2).

The molar mass means that per one mile that is how much mass so :
134.45 x 4 = 537.8
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help ? if yk the answer ? please help k

Answers

Answer:

1: X and Y

2: A

Explanation:

Low, gray, layered clouds that cover the sky and bring steady rain are O A. cumulus O B. cirrus O C. cumulonimbus OD. nimbostratus​

Answers

Answer:

D Nimbostratus

Explanation:

A heavily wooded area needs additional solar collectors to meet energy demand. Which statement describes a possible environmental consequence of adding these collectors?

A.
The amount of air pollution will increase.

B.
The amount of water pollution will increase.

C.
More trees will need to be planted to insulate the solar collectors.

D.
Trees will need to be cleared for the solar collectors to work efficiently.

Answers

Answer:

C

I think not positive good luck tho

A heavily forested area is one that has a dense and large number of trees. The areas like mountainous tracks or the protected frosts areas of wildlife.

In order to have solar collectors that meet the demands of energy generation. Some parts of the forests may have to clear off. As for collecting the sunlight, there needs to be clear ground. As trees and forests absorb insolation.

Hence the option D is correct, trees need to to be cleared for working efficiently.

Learn more about the  area that needs additional solar collectors to meet energy demand.

brainly.in/question/40583530.

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