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3 years ago

Consider the solution containing 0.181 M lead ions and 0.174

Chemistry

1 answer:

Luba_88 [7]3 years ago

8 0

Answer:

[ S2- ] = 4.0 E-47 M

Explanation:

PbS(s) → Pb2+ + S2-
HgS(s) → Hg2+ + S2-

∴ Ksp PbS = 3.4 E-28 = [Pb2+]*[S2-]

∴ [Pb2+] = 0.181 M

∴ Ksp HgS = 4.0 E-53 = [Hg2+]*[S2-]

∴ [Hg2+] = 0.174 M

∴ Ksp PbS > Ksp HgS ⇒ precipitate first Hg2+:

∴ [ Hg2+ ] = 1.0 E-6 M

⇒ [S2-] = 4.0 E-53 / 1.0 E-6 = 4.0 E-47 M

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What is the formula of titanium(IV) bromide?

Anna [14]

Answer:

$\boxed{\text{SnBr}_{4}}$

Explanation:

The name tells you that this is a binary compound (contains two elements).

It contains a metal and a nonmetal, so it is a binary ionic compound. The general rule is:

Name of compound = name of metal name of ion (two words)

Name of metal = tin(IV), so the tin ion has a charge of 4+

Name of ion = bromide. Br is in Group 17, so bromide ion has charge of 1-.

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3 years ago

Given the formula: what is a chemical name of this compound? propane propanal propanol propanone

katrin [286]

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Propanal <span> is a </span>saturated<span> three carbon </span>aldehyde (have<span> a </span>carbonyl<span> center).
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1-propanol <span> is a </span><span>primary alcohol.
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4 years ago

Which of the following is NOT a way that reducing biodiversity directly impacts humans?

Zepler [3.9K]

C. Fewer habitats for wild animals to live in

Explanation:

Biodiversity does not directly impact humans in that there are fewer habitats for wild animals to live in. This is a direct impact on animals and not humans.

Biodiversity is the variation of life forms in an area. It is measured by the ability of the ecosystem to sustain different life forms and keep their interaction with the environment.

It helps to maintain and sustain life.

To humans, reducing biodiversity;

reduces the potential of medicine derived from other organisms. When their habitat is lost, we lose them.
fewer ecosystems to appreciate for beauty and recreation. It leads to loss of the ecosystem.
fewer wild food species for humans to eat.

Loss of habitat directly affects wild animals and not man.

learn more:

Biodiversity hotspots brainly.com/question/10723602

#learnwithBrainly

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3 years ago

Even though so much energy is required to form a metal cation with a 2+ charge, the alkaline earth metals form halides with gene

nasty-shy [4]

The ∆Hrxn of the reaction is -394.5kJ/mol.

<h3>What is alkaline earth metal? </h3>

The alkaline earth metals are those elements which correspond to group 2 of the modern periodic table.

All elements of this group forms a cation of +2 charge.

The other elements of this group are:

Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium.

<h3>What is Halogen? </h3>

The Halogen elements are present in group 17 of the modern periodic table.

All elements of this groups forms anions of -1 charge.

The elements of this group are:

Fluorine, Chlorine, bromine, iodine, and astatine.

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We have following data of bond energy in kJ/mol:

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Mg—Cl = 783.5

Since, one mole of Mg react with one mole of Cl atom to form one mole of MgCl

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∆Hrxn = -394.5kJ/mol.

Thus, we concluded that the ∆Hrxn of the reaction is -394.5kJ/mol.

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2 years ago

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Anton [14]

Answer:

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Explanation:

None of the other answers are correct.

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3 years ago