Question 1193242
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0.05 g/mL and 0.01 g/mL
want 150 mL of the 0.01 g/mL solution and is to make 0.025 g/mL solution result.


v, how much of the <s>0.05</s> 0.025 g/mL solution is needed


{{{highlight_green(0.05*150+0.01*v=0.025*(v+150))}}}

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{{{5*150+1*v=2.5v+2.5*150}}}

{{{v-2.5v=2.5*150-5*150}}}

{{{(2.5-1)v=150(5-2.5)}}}

{{{1.5v=150(5-2.5)}}}

{{{v=150((5-2.5)/(2.5-1))}}}

{{{v=150(2.5/1.5)}}}

{{{highlight(v=250)}}}



---------------------------THIS WAS WRONG-------------------
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{{{cross(0.05v+0.01*150=0.025*(150+v))}}}


{{{0.05v+0.01*150=0.025*150+0.025v}}}

{{{5v+150=2.5*150+2.5v}}}

{{{2.5v=2.5*150-150}}}

{{{2.5v=1.5*150}}}

{{{highlight_green(v=150(1.5/2.5))}}}

{{{highlight(v=90)}}}