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gregori [183]
3 years ago
10

What is the answer to this

Chemistry
1 answer:
scoray [572]3 years ago
7 0
The answer is 128.19
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Silver sulfate (Ag2SO4) is slightly soluble in water and it partly dissolves at the equilibrium according to the following balan
natka813 [3]

Answer:

a) S = 0.0152 mol/L

b) S' = 4.734 g/L

Explanation:

  • Ag2SO4 ↔ 2Ag+  +  SO42-

           S                2S            S...............in the equilibrium

  • Ksp = 1.4 E-5 = [ Ag+ ]² * [ SO42-]

a) molar solubility:

⇒ Ksp = ( 2S) ² * S = 1.4 E-5

⇒ 4S² * S = 1.4 E-5

⇒ S = ∛ ( 1.4 E-5 / 4 )

⇒ S = 0.0152 mol/L

b) solubility ( S' ) in grams per liter:

∴ Mw Ag2SO4 = 311.799 g/mol

⇒ S' = 0.0152 mol/L * ( 311.799 g/mol )

⇒ S' = 4.734 g/L

4 0
3 years ago
5 points ) Which of the following is a benefit of using email to communicate at work ? a) You can express yourself in a limited
Aloiza [94]

Answer:

C

Explanation:

7 0
2 years ago
A 258-ml sample of mek, an industrial solvent, is found to have a mass of 0.599 g at and 100c. what is the molar mass of mek?
SVETLANKA909090 [29]
<span>Correct answer is : 72.0 g/mole If we assume Ideal Gas Law, PV = nRT. n = PV/RT = ((0.988 atm)*(0.258 L))/((0.0821 L*atm/mole*K)*(100 + 273.15)) = 0.00832 moles Molar mass = 0.599 g/0.00832 moles = 72.0 g/mole; your answer is E.</span>
4 0
2 years ago
Read 2 more answers
The shielding of electrons gives rise to an effective nuclear charge, Zeff, which explains why boron is larger than oxygen. Esti
nadezda [96]

<span>
</span>The solution would be like this for this specific problem:

<span> (atomic number) - (core electrons)</span> 

Boron:

Atomic number: 5 
Core electrons: 2

Boron will have the following: 2 core electrons and 3 valence electrons.
(atomic number) - (core electrons)------> (5) - (2) = +3 

<span>
</span><span>Oxygen: </span><span>
<span>Atomic number: 8 </span>
<span>Core electrons: 2 </span></span>

<span>Boron will have the following: 2 core electrons and 6 valence electrons. </span><span>
<span>(atomic number) - (core electrons)------> (8) - (2) = +6 |

So the answer would be +3 and +6</span>.</span><span>

I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

3 0
3 years ago
SCRIE FORMULA ŞI DENUMEŞTE SUBSTANŢA
butalik [34]

Answer:

raspunde in explicatie

Explanation:

În această întrebare, trebuie să scriem formula și să numim compusul.

A. 1 atom de azot și 3 atom de hidrogen Aceasta este NH3 și numele este amoniac

b. 2 atomi de hidrogen, 1 atom de carbon și 3 atomi de oxigen Adică H2CO3 Trioxocarbonat (iv)

C. 1 atom de carbon și 2 atomi de oxigen CO2 Oxid de carbon (iv)

d. 1 atom de calciu și 1 carbonat de grupă Aceasta este CaCO3 Adică trioxocarbonatul de calciu iv

e. Pb (II) și un carbonat Aceasta este PbCO3 Acesta este carbonatul de plumb (ii)

f. Grupa de cobalt 2 și fosfați

adică

Co3(PO4)2

Cobalt (ii) tetraoxofosfat (v)

g.Arsenic și radical sulfurat Adică As2S3 Trisulfida de arsen

8 0
3 years ago
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