You can identify unknown Elements by there atomic emission spectra try to identify the unknown element below. What is this cause i have no idea

You can identify unknown Elements by there atomic emission spectra try to identify the unknown elem

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elizavlsc4

02.08.2020

Physics

$\\ \sf\longmapsto \Delta P=P$

$\\ \sf\longmapsto m1v1=m2v2$

$\\ \sf\longmapsto 90(7)=m2(10)$

$\\ \sf\longmapsto 10m2=630$

$\\ \sf\longmapsto m2=\dfrac{630}{10}$

$\\ \sf\longmapsto m2=63kg$

Bruces mass is 63kg

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