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3 years ago

10

mrs. rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. which combination could she use to produce th

e hydrogen she needs?

1 answer:

Ksju [112]3 years ago

6 0

just try your hardest and awnser it your own

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What do scientists use molecular clocks to estimate?

astra-53 [7]

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3 years ago

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8090 [49]

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3 years ago

Whats the name?!?!?!??!?!?!?!?!?!?!!?!?!?!??!?!?!?!

SIZIF [17.4K]

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3 years ago

rusak2 [61]

It would be volume.

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4 0

3 years ago

What is the wavelength of an electron with a mass of 9.109×10−31 kg and a velocity of 3.43×107 ms? Use 6.626×10−34kg m2s for Pla

anyanavicka [17]

<u>Answer:</u> The wavelength of an electron is $2.121\times 10^{-11}m$

<u>Explanation:</u>

To calculate the wavelength of a particle, we use the equation given by De-Broglie's wavelength, which is:

$\lambda=\frac{h}{mv}$

where,

$\lambda$ = De-Broglie's wavelength = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

m = mass of electron = $9.109\times 10^{-31}kg$

v = velocity of electron = $3.43\times 10^{7}m/s$

Putting values in above equation, we get:

$\lambda=\frac{6.626\times 10^{-34}Js}{(9.109\times 10^{-31}kg)\times (3.43\times 10^{7}m/s)}$

$\lambda=2.121\times 10^{-11}m$

Hence, the wavelength of an electron is $2.121\times 10^{-11}m$

6 0

4 years ago