CHEMISTRY MIDDLE SCHOOL

Which state of matter has the least amount of energy?

Answers

Answer 1
Answer: Solid has the least amount of energy. 

This is so because liquid is free to move and can fit in any shape. 
Gas floats and is usually always free to move.

Solid isn't free to move unless some force moves it.
Answer 2
Answer: Matter has the least energy as a solid

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Gasoline is a mixture of compounds. A gasoline sample was found to be 2.851% (by mass) octane (C₈H₁₈). 482.6 g of gasoline is combusted to produce gaseous carbon dioxide and gaseous water.Write out the balanced combustion reaction of octane with oxygen gas to form carbon dioxide and water. Submit an image of the balanced reaction.
Show all work.

Answers

Answer:

See below.

Explanation:

The mass of octane in the sample of gasoline is 0.02851 * 482.6 =  13.759 g of octane.

The balanced equation is:

2C8H18(l)  +  25O2(g) ---->  16CO2(g)  +   18H2O(g)

From the equation, using  atomic masses:

228.29 g of  octane forms 704 g of CO2 and 324.3 g of H2O

So the mass of CO2 formed from the combustion of 13.759 g of octane = (704 * 13.759) / 228.29

= 42.43 g of CO2.

Amount of water = 324.3 * 13.759) / 228.29

= 19.55 g of H2O.

Olivia bought new gym shoes to play volleyball because she kept slipping when she ran in her old shoes. How will the new soles help solve the problem?

Answers

Maybe her old shoes had soft worn out bottoms and she slips in them. So her new shoes had more grip than her old ones so they kept her from falling.

Answer:

The correct answer is by adding surface roughness to increase friction.

Explanation:

What country was the first crystal discovered?

Answers

has never been proved since crystals have been around for longer than humanity, highest possibility that the first crystals found by us was in a cave in africa, around today's egypt. they were actually looking for gold but they stumbled upon shiny clear rocks too :)
Africa in Egypt was the first place where discovers found on crystals

Some land plants have evolved specialized vascular tissues that have allowed them to thrive on land. The developement of these structures was necessary becauseLand plants need to extract water from the ground and move it to the other structures of the plant.
Land plants need to be tall and the vascular tissues are what provide rigidity to the plant’s cells.
Land plants need to photosynthesize and the vascular tissues is where this process occurs.
Land plants don’t really need these structures as they can absorb water from the air through their leaves.

Answers

Plants are multicellular organisms that have evolved the ability to live on land. ... resemble the earliest land plants (bryophytes) in a variety of ways, including the structure ... These possessspecialized vascular tissues— phloem and xylem —to ... However, they are not restricted to thesehabitats, and some mosses thrive in ...

Jermey has two plants. he waters both equally. he puts one plant outside. he puts another plant in a closet which one is true about the plants?
A. the plant in closet will die.
B. plants only need soil to grow.
c. plants only need water to grow.
d.it does not matter where he puts the plant.

Answers

The plant in the closet will die without the proper nutrients granted through sunlight

Who discovered the gulf stream

Answers

Anto de Alaminos discovered the Gulf Stream, while Benjamin Franklin recognized the gulf stream. 
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