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VladimirAG [237]
3 years ago
9

Why is water considered the greatest solvent on earth

Chemistry
1 answer:
kotykmax [81]3 years ago
6 0
1) H2O is able to dissolve both polar molecules and non polar ones
2) due to its extreme polarity it can even dissolve some I onic compounds
3 the h2o molecule itself is small in size
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When H2SO4 is added to PbI2, a precipitate of PbSO4 forms. The PbSO4 is then filtered from the solution, dried, and weighed. If
Nookie1986 [14]

Answer:

n_{I^-}=3.11x10^{-4}molI^-

Explanation:

Hello,

In this case, the undergoing chemical reaction is shown below:

H_2SO_4(aq)+PbI_2(aq)\rightarrow PbSO_4(s)+2HI(aq)

Thus, we obtain 0.0471 g of lead (II) sulfate, the iodide ions  in the original solution are computed below by stoichiometry, taking into account that into 1 mole of lead (II) iodide there are 2 moles of iodide ions:

n_{I^-}=0.0471gPbSO_4*\frac{1molPbSO_4}{303.26gPbSO_4}*\frac{1molPbI_2}{1molPbSO_4}*\frac{2molI^-}{1molPbI_2} \\n_{I^-}=3.11x10^{-4}molI^-

Best regards.

3 0
3 years ago
What is the oxidation number for s in s2o4?
hoa [83]
The oxidation number of O is -2 and there's 4 of them so the total is -8. Since it's a molecule the sum of the oxidation numbers of the atoms must equal 0. If 4 oxygen atoms have an oxidation number of -8 then the two S atoms must is +8 to equal 0 so the oxidation number of the S is 8/2 = +4
3 0
3 years ago
Q8.what happened to the mixture?
Natali [406]
Idkkkkkkkkkkkkkkkkkkk
3 0
3 years ago
can someone answer! please don't answer for points or if you don't know it and don't answer if you are guessing make sure you un
inessss [21]

Answer:

B

Explanation:

As the distance between the planets and the sun increases, the period of revolution increases as well. The period of revolution is how long it takes for a planet to revolve around the sun. So, because the planets farther from the sun have a higher period of revolution in earth years, this also means they have longer actual years, which means the answer is B.

8 0
3 years ago
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Whoever can answer this I will give all of my points to and brainliest award.
ZanzabumX [31]

i dont see the picture.

7 0
3 years ago
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