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3 years ago

What is the wavelength of a 2.80 Hz wave?

Chemistry

1 answer:

den301095 [7]3 years ago

8 0

I attached the working and the answer to the question below.

Please note that C = speed of light, ν = frequency, λ= wavelength

<span> The wavelength of a 2.80 Hz wave is 1.07 </span>× 10¹⁰

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Given the balanced equation below, calculate the moles of aluminum that are needed to react completely with 28.7 moles of FeO. Y

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Answer:

43.05 moles of Al needed to react with 28.7 moles of FeO.

Explanation:

Given data:

Moles of FeO = 28.7 mol

Moles of Al needed to react with FeO = ?

Solution:

Chemical equation:

2Al + 3FeO → 3Fe + Al₂O₃

Now we will compare the moles of Al with FeO.

FeO : Al

2 : 3

28.7 : 3/2×28.7 = 43.05 mol

Thus 43.05 moles of Al needed to react with 28.7 moles of FeO.

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<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em><em><u> you</u></em><em><u><</u></em><em><u>3</u></em></h2>

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