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3 years ago

What is the law of conservation of energy and how do we know this is true?

2 answers:

7 0

Answer:The law of conservation of energy states that energy can neither be created nor destroyed - only converted from one form of energy to another. This means that a system always has the same amount of energy, unless it's added from the outside. ... The only way to use energy is to transform energy from one form to another.

muminat3 years ago

4 0

Answer:

law of conservation of energy is energy cannot be created or destroyed but can be transformed from one form to another

it is true as potential energy can be converted into kinetic energy

You might be interested in

. An inflated balloon has a volume of 6.0 L at sea level (1.0 atm) and is allowed to ascend in altitude until the pressure is 0.

Tju [1.3M]

Answer:

The answer to your question is Volume = 11.4 L

Explanation:

Data

Volume 1 = V1 = 6 L

Pressure 1 = P1 = 1 atm

Temperature 1 = T1 = 22°C

Volume 2 = V2 = ?

Pressure 2 = 0.45 atm

Temperature 2 = -21°C

Process

1.- Convert temperature (°C) to °K

T1 = 273 + 22 = 295°K

T2 = 273 + (-21) = 252°K

2.- Use the combined gas law to solve this problem

P1V1 / T1 = P2V2 / T2

-Solve for V2

V2 = P1V1T2 / T1P2

-Substitution

V2 = (6)(1)(252) / (295)(0.45)

- Simplification

V2 = 1512 / 132.75

- Result

V2 = 11.38 L

3 0

3 years ago

Magnesium metal burns with a bright white flame. What conclusions can you draw about the electron transitions that can take plac

labwork [276]

They are activating which is causing them to do this

4 0

3 years ago

How many atoms are in 0.750 moles of zinc?

ollegr [7]

Best Answer: 4.52 X 10²³ atoms. Use Avogadro's number to multiply 0.750 moles times 6.022 X 10²³

5 0

3 years ago

5. If all the particles in a material are made up of

Westkost [7]

Answer:

No. Because a pure substance, no matter if an element, compound, it can only contain one kind of particle .

Explanation:

5 0

3 years ago

Four molecules have carbon as the central atom and hydrogen atoms around it. Which shape would give rise to a polar molecule?

ivann1987 [24]

Answer:

D) Tetrahedral

Explanation:

Hello,

Tetrahedral is a molecular shape that turns out when four bonds and no lone pairs around the central atom in the molecule. The bonded atoms to the central atom lie at the corners of a tetrahedron with 109.5° angles between them. The molecules with an tetrahedral electron pair geometries have $sp^3$ hybridization at the central atom. For instance, both ammonium ion ( $NH_4^+$ ) and methane ( $CH_4$ ) have a tetrahedral molecular geometry.

Best regards.

8 0

4 years ago