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dem82 [27]
4 years ago
6

How many neutrons does an element have if its atomic number is 45 and its mass number is 161

Physics
2 answers:
disa [49]4 years ago
5 0
Here is the formula that you need to know for this problem:
Number of proton (atomic number) + Number of neutrons = Mass number

So,

45  +  Number of Neutrons = 161

Number of neutrons = 161 - 45

Number of Neutrons = 116
Salsk061 [2.6K]4 years ago
4 0
Proton and electron same
proton and the atomic number is same
So mass (-) atomic number
which is 161-45= 116
answer is 116 :)

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7 0
4 years ago
Read 2 more answers
uppose two train cars are moving toward one another, the first with a mass of 150,000 kg and a velocity of 0.300 m/s; the second
kondaur [170]

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Let v represent the post-collision speed of the connected mass.

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After colliding, they move at a speed of 0.122 m/s towards the direction of the right.

Learn more about velocity here-

brainly.com/question/18084516

#SPJ4

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