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3 years ago

20 pts!

Chemistry

2 answers:

Arlecino [84]3 years ago

8 0

Answer:

Molarity is the concentration of x moles of solute in 1 L of solution. ... What is the molarity of a solution prepared by dissolving 15.0 g of NaOH in enough water to make a total ... Litres of solution=225mL soln ×1 L soln1000mL soln =0.225 L soln ... (MM = 97.10 g/mole) dissolved in 75.00mL of D.I. water was titrated with KOH.

Explanation:

i just know XD

Finger [1]3 years ago

5 0

Answer:

2.17 so have a nice day

hope its right

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Why is water said to be universal solvent?

Pachacha [2.7K]

Answer:

Explanation:

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3 years ago

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Valeric acid, HC5H9O2 (Ka = 1.5 ✕ 10−5), is used in the manufacture of magnesium valerate, a nerve-calming agent. What is the hy

Studentka2010 [4]

Answer:

$[H^+]=0.00332M$

Explanation:

Hello,

In this case, considering the dissociation of valeric acid as:

$HC_5H_9O_2 \rightleftharpoons C_5H_9O_2 ^-+H^+$

Its corresponding law of mass action is:

$Ka=\frac{[H^+][C_5H_9O_2^-]}{[HC_5H_9O_2]}$

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$Ka=\frac{(x)(x)}{0.737-x}=1.5x10^{-5}$

Solving for $x$ we obtain:

$x=0.00332M$

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$[H^+]=x=0.00332M$

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3 years ago

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3 years ago

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3 years ago

What volume of 24% trichloroacetic acid (tca) is needed to prepare eight 3 ounce bottles of 10% tca solution?

Sever21 [200]

Answer:

295.7 mL of 24% trichloroacetic acid (tca) is needed .

Explanation:

Let the volume of 24% trichloroacetic acid solution be x

Volume of required 10% trichloroacetic acid solution =8 bottles of 3 ounces

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$x\times \frac{24}{100}=709.68 mL\times \frac{10}{100}$

x = 295.7 mL

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