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3 years ago

9. What type of bonds hold polyatomic ions together?

Chemistry

2 answers:

Mrac [35]3 years ago

8 0

B. Is the answer I'm pretty sure

ella [17]3 years ago

5 0

The answer is B Covalent bonds

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Which would have the highest first ionization energy?

LekaFEV [45]

Answer:

Thus, helium has the largest first ionization energy, while francium has one of the lowest.

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3 years ago

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A sound wave from a jackhammer travels through a section of concrete with a fixed frequency. At the concrete's boundary is mud.

Ira Lisetskai [31]

Answer:

It might be too late now, but the correct answer for the question is B.

Explanation:

According to the graph you can see when it hit the boundary of the mud it curved downward making the direction change; which then the mud probably had a hollow shell, where the speed was moving much faster.

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3 years ago

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Use the de Broglie's Wave Equation to find the wavelength of an electron moving at 7.3 × 106 m/s. Please show your work. Note: h

ad-work [718]

Answer:

$\lambda=9.96\times 10^{-11}\ m$

Explanation:

The expression for the deBroglie wavelength is:

$\lambda=\frac {h}{m\times v}$

Where,

$\lambda$ is the deBroglie wavelength

h is Planck's constant having value $6.62607\times 10^{-34}\ Js$

m is the mass of electron having value $9.11\times 10^{-31}\ kg$

v is the speed of electron.

Given that v = $7.3\times 10^6\ m/s$

Applying in the equation as:

$\lambda=\frac {h}{m\times v}$

$\lambda=\frac{6.62607\times 10^{-34}}{9.11\times 10^{-31}\times 7.3\times 10^6}\ m$

$\lambda=\frac{10^{-34}\times \:6.626}{10^{-25}\times \:66.503}\ m$

$\lambda=\frac{6.626}{10^9\times \:66.503}\ m$

$\lambda=9.96\times 10^{-11}\ m$

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3 years ago

Please help me I can’t figure it out

lukranit [14]

The answer is A. because as you can see it pulls the force

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4 years ago

How many moles are in 337 grams of tellurium?

MaRussiya [10]

about 43001 is it i think

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3 years ago