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zmey [24]
1 year ago
5

Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?

Chemistry
2 answers:
Fudgin [204]1 year ago
5 0

Answer:

<h2>Which of the following statements correctly describes a difference between mechanical waves and electromagnetic waves?</h2><h2><em>:- Mechanical waves require a medium to travel through, whereas electromagnetic waves can travel through empty space.</em></h2>

<em>is the correct</em>

<em>pls mark me as brainliest pls  </em>

<em></em>

<h3 />
Readme [11.4K]1 year ago
5 0
The answer is D
Explanation: I want points
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Can someone please help me on the second one? I have no idea what to do.
Aleks [24]

The reaction will produce 12.1 g Ag₂S.

<em>Balanced equation</em> = 2Ag + S ⟶ Ag₂S

<em>Mass of Ag₂S</em> = 10.5 g Ag × (1 mol Ag/107.87 g Ag) × (1 mol Ag₂S/2 mol Ag)

× (247.80 g Ag₂S/1 mol Ag₂S) = 12.1 g Ag₂S

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3 years ago
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Explanation:

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8 0
3 years ago
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Which lists only metalloids?
enot [183]

Answer:

boron (B), germanium (Ge), and tellurium (Te)

6 0
3 years ago
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Balance the following: ___ AlBr3+ ___ K---&gt; ___KBr+ ___ Al
Nataliya [291]
___AlBr3 + ___K -> ___KBr + ___ Al

1 AlBr3 + 3K -> 3KBr + 1 Al

hope this helps............
6 0
3 years ago
How many milliliters of 5.0 M NaOH are needed to exactly neutralize 40. milliliters of 2.0 M HCl?
zubka84 [21]

Answer:

16mL

Explanation:

Using the following formula;

CaVa = CbVb

Where;

Where

Ca = concentration/molarity of acid (M)

Va = volume of acid (mL)

Cb = concentration/molarity of base (M)

Vb = volume of base (mL)

According to the information provided in this question;

Ca (HCl) = 2M

Cb (NaOH) = 5M

Va (HCl) = 40mL

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Using CaVa = CbVb

Vb = CaVa/Cb

Vb = 2 × 40/5

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5 0
2 years ago
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