<u>Answer:</u> The speed of the electron is 
<u>Explanation:</u>
To calculate the speed of electron for given wavelength, we use the equation given by De-Broglie's, which is:

where,
= De-Broglie's wavelength = 
h = Planck's constant = 
m = mass of the electron = 
v = speed of the electron = ?
Putting values in above equation, we get:

Hence, the speed of the electron is 
Answer:
Hey!
Your answer is 45kg.m/s
Explanation:
Using the formula P=M x V
(p=momentum...M=mass...V=velocity)
We do M x V
15 x 3
Which gives us an answer of 45kg.m/s!
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Answer :I think it’s c
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Answer:
letter C. Solid iron and chlorine gas react to produce solid iron (lll) chloride
Explanation:
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