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Misha Larkins [42]

3 years ago

15

PLEASE HELP IM DYING OF CHEMISTRY, I NEED HELP FINDING ATOMIC MASS WITH ISOTOPES

1 answer:

Nikolay [14]3 years ago

5 0

Answer:

option A is correct

Explanation:

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6 0

3 years ago

Which of the following things would be the MOST irresistible for a dog?

kolbaska11 [484]

Answer:

B.a fire hydrant

hope it helps!

5 0

3 years ago

Read 2 more answers

when you accidentally touch a hot object which two organ system are most directly involved in your action?

Mnenie [13.5K]

nerves and fear my opinion at least

3 0

3 years ago

Formula for "barium oxide"

Harman [31]

The answer is BaO
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4 0

3 years ago

How fast must a 56.5-g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green li

nikklg [1K]

Answer:vv

$v=2.17\times 10^{-26}\ m/s$

Explanation:

The expression for the deBroglie wavelength is:

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

Where,

$\lambda$ is the deBroglie wavelength

h is Plank's constant having value $6.626\times 10^{-34}\ Js$

m is the mass of = $56.5\ g=0.0565\ kg$

v is the speed.

Wavelength = 5400 Å = $5400\times 10^{-10}\ m$

Applying in the equation as:-

$5400\times 10^{-10}=\frac{6.626\times 10^{-34}}{0.0565\times v}$

$v=\frac{331300000}{10^{34}\times \:1.5255}\ m/s$

$v=2.17\times 10^{-26}\ m/s$

7 0

3 years ago