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2 years ago

What mechanical waves needs a medium to travel through?

Chemistry

2 answers:

Paul [167]2 years ago

6 0

Answer: A. All mechanical waves needs a medium to travel through.

Explanation:

Mechanical waves are waves that require a medium to propagate their energy. Examples of mechanical waves include : Transverse wave, Longitudinal wave and Surface wave.

ValentinkaMS [17]2 years ago

5 0

A) all mechanical waves need a medium to travel through.
This is true because mechanical waves move in a wave like manner at the atomic level. This is why an table vibrates when you put a speaker on top of it .

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Chemicals are classified as health hazards when they pose which of the following hazardous effects?

AlexFokin [52]

Answer:

poisoning, breathing problems, skin rashes, allergic reactions, allergic sensitisation, cancer, and other health problems from exposure.

Explanation:

many hazardous chemicals are also classified as dangerous goods.

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2 years ago

A golf ball has more mass than a tennis ball because it ?

dedylja [7]

Most tennis balls are usually hollow, while golf balls are not. Therefore a golf ball contains more mass.

Hope this helps!

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2 years ago

Read 2 more answers

Fluorine + sodium chloride → sodium fluoride + __________. What is the missing chemical name?

Deffense [45]

Answer:

Chlorine (Cl)

Explanation:

The equation would be:

$F+NaCl$ → $NaF + Cl$

This is because no atom is lost in a reaction. Chlorine would be the missing chemical as it is on the other side of the equation and needs to be accounted for on the products side.

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2 years ago

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Dvinal [7]

Need the answer to this question

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2 years ago

How many moles of argon, Ar, are in 1.31×1024 Ar atoms?

ddd [48]

Answer:

2.18 mol Ar.

Explanation:

Hello there!

In this case, according to the definition of mole as the amount of particles of a given substance, it is possible to introduce the Avogadro's number to assert that 1 mole of any element contains 6.022x10²³ atoms; thus, the moles of Ar in the given amount of atoms turns out to be:

$1.31x10^{24}Ar atoms*\frac{1molAr}{6.022x10^{23}atoms}\\\\=2.18molAr$

Best regards!

5 0

2 years ago