Answer:
One mole of lithium (Li) is equal to 6.022 X 1023 atoms of lithium.
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Step-by-step explanation:
x*x=x^2
x*9=9x
x*3=3x
9x+3x=12x
9x3=27
x^2+12x+27
2x+4=18
2x=18-4
2x=14
x=14/2
x=7
25+3x=15
3x=15-25
3x= -10
x= -10/3
x= -3.333
