Mathematics: Calculate the molarity of h after 25 ml of 0.025 m koh was added. remember, the volume has changed and is now the sum of the two mixed volumes?

Calculate the molarity of h after 25 ml of 0.025 - id2500254600134, jasminelockhart432

kj44

15.01.2022

Step-by-step explanation:

Given

initial volume $V_1=25\ ml$

initially Molarity $c_1=0.025\ m\ of\ KOH$

suppose V liter is added to the mixture

To calculate the molarity of diluted solution

c_1V_1=c_2V_2

final volume V_2=V+25

$0.025\times 25=c_2\times (V+25)$

$c_2=\frac{0.025\times 25}{V+25}$

$c_2=\frac{0.625}{V+25}\ m$

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sedratkawaiah13

30.04.2023

It will take 8 minutes to be on same height.

Step-by-step explanation:

Let x= Time taken to be at same height.

The first is 130 feet high and is rising at a rate of 7 feet per minute.

Height = 130+7x

The second is 226 feet high and is descending at a rate of 5 feet per minute.

Height = 226-5x

According o the question,

$130+7x=226-5x\\\\\Rightarrow\ 7x+5x=226-130\\\\\Rightarrow\ 12x = 96\\\\\Rightarrow\ x=\dfrac{96}{12}\\\\\Rightarrow\ x=8$

Hence, it will take 8 minutes to be on same height.

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