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zysi [14]
2 years ago
10

Many appliances in your home and school use electrical energy. Which of these appliances is intended to convert electrical energ

y into sound energy?
Chemistry
1 answer:
Solnce55 [7]2 years ago
6 0

Answer:

music amplifier or a loudspeaker

Explanation:

A music amplifier or a loudspeaker are a few devices that convert electrical energy into sound energy.

As it is a well known fact that energy can neither be created nor be destroyed it can only change from one form to the other. As here it is changing from electrical to sound.

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Which of the following is not a covalent compound?
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Answer:

PbSO4  is not a covalent compound.

Explanation:

PbSO4  is an ionic compound.

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2 years ago
How’s it possible for liquid to boil at 25 C?
Lera25 [3.4K]

Answer:

Well, not always. It depends on where you're doing the boiling. In fact, water will boil at about 202 degrees in Denver, due to the lower air pressure at such high elevations

Explanation:

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3 years ago
1.How many milliliters of an aqueous solution of 0.157 M aluminum bromide is needed to obtain 13.4 grams of the salt?
trasher [3.6K]

Answer:

The answer to your question is:

1.- 320 ml

2.- 0.63 M

Explanation:

Data

V = ?   AlBr₃ = 0.157 M

mass = 13.4 g

Process

MW ALBr₃ = 27 + (80x3) = 267 g

                                267 g -------------------- 1 mol

                                13.4 g   ------------------  x

                                x = (13.4 x 1) / 267

                               x = 0.05 moles

Volume = 0.05/ 0.157

             = 0.320 l or 320 ml

2.-

NaNO₃ mass = 20.2 g

V = 375 ml

Molarity = ?

MW = 23 + 14 + 48 = 85g of NaNO₃

                          85 g of NaNO₃ -----------------   1 mol

                          20.2 g               -----------------   x

                         x = (20.2 x 1) / 85

                         x = 0.24 mol

Molarity = 0.24 / 0.375

             = 0.63                

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3 years ago
How many atoms are present in 0.35 mol of carbon dioxide?
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<span> carbon dioxide </span>
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3 years ago
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Convert 90 centuries to minutes
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The answer should be 4.73e+9
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3 years ago
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