1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LenKa [72]
3 years ago
13

Sally has constructed a concentration cell to measure Ksp for MCln. She constructs the cell by adding 2 mL of 0.05 M M(NO3)n to

one compartment of the microwell plate. She then makes a solution of MCln by adding KCl to M(NO3)n. She adds 6.380 mL of the resulting mixture to a second compartment of the microwell plate.
Sally knows n (the charge on the metal ion) = +2
She has already calculated [Mn+] in the prepared MCln solution using the Nernst equation. [Mn+] = 8.279 M

Required:
How many moles of [Cl-] must be dissolved in that compartment?
Chemistry
1 answer:
hram777 [196]3 years ago
3 0

Answer:

0.1056 mole

Explanation:

As Sally knows that the charge on the metal ion is n = +2

$MCl_n=MCl_2$

In that compartment $[M^{n+}]=[m^{2+}]=8.279 \ M$

The volume of the $MCl_n$ taken in that compartment = 6.380 mL

So, the number of moles of $M^{2+} = 8.279 \times 6.380$

                                                      = 52.82 m mol

                                                      = 0.05280 mol

$MCl_n \rightarrow M^{n+}+nCl^-$

But n = 2

Therefore, moles of $Cl^-$ = 2 x moles of $M^{n+}$

                                       = 2 x 0.05282

                                       = 0.1056 mole

You might be interested in
At 450 mm Hg a gas has a volume of 760 L, what is its volume at standard pressure​
KatRina [158]

Answer:

450.0 L.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

  • If n and T are constant, and have different values of P and V:

<em>(P₁V₁) = (P₂V₂).</em>

<em></em>

V₁ = 760.0 L, P₁ = 450.0 mm Hg,

V₂ = ??? L, ​P₂ = 760.0 mm Hg (standard pressure = 1.0 atm = 760 mm Hg).

∴ V₂ = (P₁V₁)/(P₂) = (760.0 L)(450.0 mm Hg)/(760.0 mm Hg) = 450.0 L.

5 0
4 years ago
Consider the balanced equation below.
wolverine [178]

Answer:

a) H2S:SO2 = 2:2 and O2:H2O = 3:2

Explanation:

  • 2H2S + 3O2 → 2SO2 + 2H2O

⇒ H2S:SO2 = 2 mol H2S / 2 mol SO2 ≡ 2 : 2

⇒ O2:H2O = 3 mol O2 / 2 mol H2O ≡ 3 : 2

8 0
3 years ago
Hey umm can yall help me
Bezzdna [24]

Answer:

C

Explanation:

Because a compound is TWO or MORE atoms combined together and in C there are two different atoms in answer choice C

8 0
3 years ago
A student mixed 100 mL of water at 15°C with 100 mL of water at 65°C. What is the final temperature of the water?​
horrorfan [7]

Answer:

<em><u>5</u></em><em><u>0</u></em><em><u>°</u></em><em><u>C</u></em>

Explanation:

<em><u>please click the heart and rate excellent and brainleist to </u></em><em><u>❤</u></em><em><u>☺️</u></em><em><u>☻</u></em><em><u>♨️</u></em><em><u>♨️</u></em><em><u>☻</u></em><em><u>☺️</u></em><em><u>❤</u></em>

7 0
3 years ago
IN:<br> Y:<br> what is the lewis structure
Ghella [55]

Answer:

Lewis structures, also known as Lewis dot diagrams, Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, are diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. A Lewis structure can be drawn for any covalently bonded molecule, as well as coordination compounds

Explanation:

6 0
3 years ago
Other questions:
  • cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The temperature of the surroundings is l
    10·1 answer
  • The identities of substances are the same before and after which type of change
    13·1 answer
  • The burning of fossil fuels will release ____ into the carbon-oxygen cycle.
    11·1 answer
  • What did Robert Millikan discover
    7·2 answers
  • which is the odd one out? pure substance, mixture, element, or compound? this is assignment on elements, compounds and mixtures​
    7·2 answers
  • Radioactive decay is likely to occur when ... radioactive decay is likely to occur when ... protons break into neutrons and elec
    15·2 answers
  • (03.01 LC<br> Which of the following is not present in an atom? (1 point)
    12·1 answer
  • solution of silver chloride at constant temperature: AgCl(s) ↔ Ag+(aq) + Cl-(aq) As NaCl(s) is dissolved in the solution, the co
    14·1 answer
  • Which formula represents a hydrocarbon?<br><br><br> CaO2<br><br> C5H12<br><br> CH2O<br><br> H2SO4
    6·1 answer
  • What type of chemical reaction is NaHCO3=Na2CO3+H2O+CO2​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!