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Wittaler [7]
3 years ago
11

Emma sings into a microphone. The sound is transferred from the microphone to a loudspeaker that is plugged into the wall. Her v

oice comes out of the loudspeaker and sounds much louder than before.
In this system, sound energy is being transformed into _______ energy and then back into _______ energy.
Chemistry
2 answers:
8090 [49]3 years ago
4 0

Electrical then back into sound

max2010maxim [7]3 years ago
3 0

Electrical energy and back to sound energy

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<span>Decomposition reaction.</span>
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Which of the following statements does not describe what he structure of an atom an atom has a small dense center called nucleus
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inside the nucleus of an atom are protons and electrons.

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2 years ago
What is the molarity when 0.181 moles of MgNO3)2 are dissolved in enough water to make 0.750 L solution?
eimsori [14]

Answer:

Molarity = 0.24 M

Explanation:

Given data:

Number of moles of Mg(NO₃)₂ = 0.181 mol

Volume of solution = 0.750 L

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

Molarity = 0.181 mol / 0.750 L

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4 0
3 years ago
A chocolate bar weighs 4.00 ounces. If the chocolate delivers 2.78 calories per gram, how many
dimulka [17.4K]

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40.79

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6 0
3 years ago
I know that one of them is multiple choice but i’m not sure which one it is.
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1. neutrons

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3. protons and neutrons

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5 0
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