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max2010maxim [7]
2 years ago
14

Help! Homework due tomorrow ​

Chemistry
2 answers:
slavikrds [6]2 years ago
8 0
You put precipitation in the wrong place the answer is D+A (number 4)
ss7ja [257]2 years ago
4 0
You put precipitation in the wrong place the answer is D+A (number 4) hope this helped
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Calculate the ph of a solution formed by mixing 200.0 ml of 0.30 m hclo with 300.0 ml of 0.20 m kclo. the ka for hclo is 2.9 × 1
masha68 [24]

Answer:

The pH of the solution will be 7.53.

Explanation:

Dissociation constant of KClO=K_a=2.8\times 10^{-8}

Concentration of acid in 1 l= 0.30 M

Then in 200 ml = 0.30 M\times 0.200 L=0.06 M

The concentration of acid, HClO=[acid]= 0.006 M

Concentration of salt in 1 L = 0.20 M

Then in 300 ml = 0.20 M\times 0.300 L=0.06 M

The concentration of acid, KClO=[salt]= 0.006 M

The pH of the solution will be given by formula :

pH=pK_{a}^o+\log\frac{[salt]}{[acid]}

pH=-\log[2.8\times 10^{-8}]+\frac{[0.06 M]}{[0.06 M]}

The pH of the solution will be 7.53.

4 0
3 years ago
Read 2 more answers
What is the volume in liters of 3.39 kg of ethylene glycol?
Sergeu [11.5K]
<span>The volume in liters is </span>v=3.7xL
4 0
3 years ago
How many grams of KF are in 2 liters of a 3.0 M solution of KF
Rufina [12.5K]

Answer:

mass ( g ) = 348 g

Explanation:

First you know : M = mole / volume (L)

in question you have the M and V and the formula of SUBSTANCE ( KF )

first you get the number of mole from equation above

so 3 = no of mole / 2

no of mole = 3 × 2 = 6 moles

and the moles equation is no of moles = mass ( g ) / molecular weight ( g/mole )

so you have already calculate the moles and you can know the MW from the Question

Mw of KF = 39 + 19 = 58

so n = mass / MW

so 6 = mass / 58

mass ( g ) = 348 g

GOOD LUCK

4 0
3 years ago
What is one example of a scientific theory?
lesya692 [45]

The theory or relativity. The Big Bang theory (not the show. In science, the big bang theory is a real theory). I know that was two, I just wanted to give you more than one example! Please give me brainiest!

7 0
2 years ago
What is the mass of 1.63x10^21
krok68 [10]

Answer:

7.60 x 10^-2 g.

3 0
3 years ago
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