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3 years ago

a solution contains 2.1 moles of HCl and has a molarity of 6.00 M what volume of the solution occupy.

1 answer:

8 0

Use the formula C = n / V

We are given the moles, n = 2.1
And the molarity, C = 6

Rearrange the formula with V as the subject:

V = n / C

Sub in your values,

V = 2.1 / 6
= 0.35 L

Hope this helped! :)

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A tank contains 90 kg of salt and 2000 L of water. Pure water enters a tank at the rate 6 L/min. The solution is mixed and drain

sashaice [31]

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a) 90 kg

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c) 0 kg/L

Explanation:

Mass balance:

$-w=\frac{dm}{dt}$

w is the mass flow

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v is the volume flow

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$-3*L/min*\frac{dt}{2000L+(3)*L/min*t}=\frac{dm}{m}$

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$-[ln(2000L+3*L/min*t)-ln(2000L)]=ln(m)-ln(90kg)$

$-ln[(2000L+3*L/min*t)/2000L]=ln(m/90kg)$

$m=90kg*[2000L/(2000L+3*L/min*t)]$

a) Initially: t=0

$m=90kg*[2000L/(2000L+3*L/min*0)]=90kg$

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3 years ago

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3 years ago

Read 2 more answers