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3 years ago

10

❗️❗️i need help with 10 pages of 11th grade chemistry questions. they are mostly mutiple choice. i really need this done I WILL

PAY 20$!)

2 answers:

kirill115 [55]3 years ago

8 0

Answer:

if you post it, i'll do it.

Explanation:

slamgirl [31]3 years ago

6 0

Answer:

well you didnt post anything

Explanation:

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3 years ago

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3 years ago

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AleksAgata [21]

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Explanation:

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3 years ago

Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate

OLga [1]

Answer:

$Molar solubility(S)=1.71\times10^{-2} mole/litre$

Explanation:

Assume Ksp of $Pb(SCN)_{2}$ = $2\times10^{-5}$ ( it is general value ,i took it because not given in question)

molar solubilty means how much maximum mole of lead thiocynate is dissolved in one litre of solvent.

Ksp=solubility product;

$Pb(SCN)_2= Pb^{2+} +2SCN^-$

Lets molar solubilty of $Pb(SCN)_2$ is S then

$[Pb^{+2}]=S;$

$[SCN^{-1} ]=2S;$

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3 years ago

The average mass of all isotopes of n element is called the ______

Gnoma [55]

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4 years ago