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3 years ago

What is the potential energy of the bowling ball as it sits on top of the building?

Chemistry

1 answer:

Tju [1.3M]3 years ago

8 0

Answer:

Potential energy is energy due to an object's height above the ground.

Potential energy = mass x gravity x height

Kinetic energy is energy due to the motion of the object.

Kinetic energy = 1/2 x mass x velocity²

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The decomposition of water into hydrogen gas Hy and oxygen gas Oz can be modeled by the balanced chemical equation

ASHA 777 [7]

Answer:

D. ) 2H2O - 2H2 + O2

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3 years ago

Is anyone good at chemistry if so can someone help me please ?<br><br> (NO LINKS)

Daniel [21]

The reactions are a bit poorly written. While it's true that aqueous H₂CO₃ is produced in this neutralization reaction, the H₂CO₃ rapidly decomposes to yield CO₂(g) and H₂O(l). Writing the product as H₂CO₃(aq) in the net ionic equation is unnecessarily confusing since it portrays the substance as nonionizing yet water-soluble.

In any case, the Na⁺ and the Cl⁻ are the spectator ions here.

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3 years ago

Explain why the catalyst is used as a very fine powder and larger pieces of iron are not used.

Allushta [10]

Answer:

<h2><u>Reason:</u></h2>

Catalyst is used as a very fine powder and larger pieces of iron are not used. This is because the surface area of catalyst needs to be large so that more of the surface is exposed to the substrate and more of the substrate is catalyzed.

<h2><u>Important Info:</u></h2>

=> Larger Pieces of Iron has a smaller surface area than the fine particles.

=> Larger the surface area of catalysts/enzymes , more will be the reaction rate and vice versa.

Hope this helped!

<h2>~AnonymousHelper1807</h2>

7 0

3 years ago

Identify the power of ten that defines each of these prefixes. Input your answers as 10 x where x is the power of ten. nano- ___

Gemiola [76]

<u>Answer:</u> The quantity of every prefix is written below as a power of ten.

<u>Explanation:</u>

In the metric system of measurement, the name of multiples and subdivision of any unit is done by combining the name of the unit with the prefixes.

<u>For Example:</u> deka, hecto and kilo means 10, 100 and 1000 respectively. Deci, centi and milli means one-tenth, one-hundredth, and one-thousandth respectively.

The quantity of these prefixes are written as the power of 10.

For the given prefixes:

<u>Nano:</u> The quantity will be $10^{-9}$

<u>Kilo:</u> The quantity will be $10^3$

<u>Centi:</u> The quantity will be $10^{-2}$

<u>Micro:</u> The quantity will be $10^{-6}$

<u>Milli:</u> The quantity will be $10^{-3}$

<u>Mega:</u> The quantity will be $10^6$

Hence, the quantity of every prefix is written above as a power of ten.

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3 years ago

If an endothermic process absorbs 256j how many kilocalories are absorbed

Finger [1]

There are several units for expressing energy, Most common are joules and kilocalories.

The conversion factor of joule to kilocalories is
1 kilo calorie = 4184 J
∴ x kilo calorie = 256 J

x = $\frac{256}{4184} = 0.0611$ kilo calories

Thus, 256 J = 0.0611 kilocalories

8 0

3 years ago

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