Chemistry: Pls answer kim is doing an experiment with sound waves. she tested to see how quickly a sound wave could travel through three different materials: a metal pole, a helium balloon and a glass of water. she recorded her results. which of the following is most likely true? group of answer choices the sound wave traveled more quickly through the glass of water than the metal pole. the sound wave traveled the fastest through the helium. the sound wave traveled more quickly through the water than the balloon.

Explanation:You can convert the density into atomic density using the atomic weight and Avogadro s numberA dimensional analysis is very helpful: Follow the chain: g cancels with g, mol cancels with mol; at the end, what remains is atoms/cm³, which is what you want.Use that with your data: ...

Pls answer kim is doing an experiment with sound

Ответ:

preety5445

15.01.2022

Chemistry

The sound wave travelled more quickly through the glass of water than the metal pole.

The sound wave travelled the fastest through the helium.

The sound wave travelled the slowest through the metal pole.

These 3 are most likely true.

If you have to pick just one, the sound wave travelled the fastest through the helium.

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Ответ:

Bleejones00

25.05.2021

Chemistry

$\large\boxed{\large\boxed{5.00\times 10^{22}atoms/cm^3}}$

Explanation:

You can convert the density into atomic density using the atomic weight and Avogadro's number

A dimensional analysis is very helpful:

$\dfrac{g}{cm^3}\times \dfrac{mol}{g}\times \dfrac{atoms}{mol}=\dfrac{atoms}{cm^3}$

Follow the chain: g cancels with g, mol cancels with mol; at the end, what remains is atoms/cm³, which is what you want.

Use that with your data:

$\dfrac{2.33g}{cm^3}\times \dfrac{1mol}{28.09g}\times \dfrac{6.022\times 10^{23}atoms}{mol}=\approx 5.00\times10^{22}atoms/cm^3$

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