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andrew-mc [135]
4 years ago
13

Which is the best example of potential energy?

Chemistry
2 answers:
babymother [125]4 years ago
8 0

Answer:

holding a basketball in the air

Explanation:

the ball has potential to have a certain amount of energy but hasn't exerted it yet.

Ipatiy [6.2K]4 years ago
5 0

turning on a flash light

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A 55.0g sample of iron (III) filings is reacted with 23.8g of powdered sulfur (S8). How much iron (III) sulfide in moles would b
Margaret [11]

Answer:

0.744 mol

Explanation:

the balanced equation for the reaction is

8Fe + S₈ ---> 8FeS

molar ratio of Fe to S₈ is 8:1

number of moles of Fe - 55.0 g / 56 g/mol = 0.98 mol

number of moles of S - 23.8 g / 256 g/mol = 0.093 mol

if we are to assume that S₈ is the limiting reactant

if 1 mol of S₈ reacts with 8 mol of Fe

then 0.093 mol of S₈ reacts with - 8 x 0.093 mol = 0.744 mol of Fe

however there's 0.98 mol of Fe present but only 0.744 mol of Fe is needed

therefore Fe is in excess and S₈ is the limiting reagent

molar ratio of S₈ to FeS is 1:8

then 0.093 mol of S₈ reacts with - 8 x 0.093 = 0.744 mol of FeS

number of FeS moles produced is 0.744 mol

8 0
3 years ago
Read 2 more answers
The cell theory was A. developed by Robert Hooke. B. developed before microscopes were invented. C. developed only after electro
dangina [55]
The answer is b if it wrong sorry
6 0
3 years ago
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How many grams of water are produced from 100 grams of oxygen?
Allisa [31]

Answer:

28,125 g

Explanation:

m(O₂) = 100 g

n(O₂) =M(O₂)/m(O₂)=32 gram per mole / 100 g = 0,32 mole

O₂ + 2H₂ ⇒ 2H₂O  ,  n(H₂O) = 2 × n(O₂)

m(H₂O) = M(H₂O)/2 × n(O₂) = 18 grams per mole / 2 × 0,32 mole = 28,125 g

6 0
3 years ago
What is a Siberian wood frogs habitat? <br> Pls help
AleksandrR [38]
Hello!

Here is your answer:

A Siberian wood frogs habitat is most likely INA forest were it can stay moist and have a surplus of insects to eat.

Your answer is a rain forest.

Hope this helps!
6 0
3 years ago
Why is the circulatory system so important? please explain in own yours I keep getting copy and paste please don’t do that it’s
expeople1 [14]

<u>Importance </u><u>of </u><u>Circulatory </u><u>System</u>

  • This system helps in transportation of respiratory gases like O2 and CO2, nutrients, hormones, enzymes, minerals, waste products.
  • It helps in storage of essential substances for future use.
  • It also generates heat to the body.

Hope you could understand.

If you have any query, feel free to ask.

7 0
3 years ago
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