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
Masja [62]
2 years ago
12

You mix 265.0 mL of 1.20 M lead(II) nitrate with 293 mL of 1.55 M potassium iodide. The lead(II) iodide is insoluble. What amoun

t (g) of solid is produced from this mixture
Chemistry
2 answers:
slava [35]2 years ago
7 0

Answer:

105 grams PbI₂

Explanation:

Pb(NO₃)₂ + 2KI => 2KNO₃ + PbI₂(s)

moles Pb(NO₃)₂ = 0.265L(1.2M) = 0.318 mole

moles KI = 0.293(1.55M) = 0.454 mole => Limiting Reactant

moles PbI₂ from mole KI in excess Pb(NO₃)₂ = 1/2(0.454 mole) = 0.227 mol PbI₂

grams PbI₂ = 0.227 mol PbI₂ x 461 g/mole = 104.68 g ≈ 105 g PbI₂(s)

SashulF [63]2 years ago
5 0

Answer:

104.6 grams of PbI2 (solid) will be produced

Explanation:

Step 1: Data given

Volume of a 1.20 M lead(II) nitrate = 265.0 mL = 0.265 L

Volume of a 1.55 M potassium iodide = 293.0 mL = 0.293 L

Step 2: The balanced equation

Pb(NO3)2(aq) + 2KI(aq) → 2KNO3(aq) + PbI2(s)

Step 3: Calculate moles

Moles = molarity * volume

Moles Pb(NO3)2 = 1.20 M * 0.265 L

Moles Pb(NO3)2 = 0.318 moles

Moles KI = 1.55 M * 0.293 L

Moles KI = 0.454 moles

Step 4: Calculate the limiting reactant

For 1 mol Pg(NO3)2 we need 2 moles of KI to produce 2 moles of KNO3 and 1 mol of PbI2

Ki is the limiting reactant. It will completely be consumed. (0.454 moles) Pb(NO3)2 is in excess. There will react 0.454 / 2 = 0.227 moles

There will remain 0.318 moles - 0.227 =0.091 moles

Step 5: Calculete moles PbI2

For 1 mol Pg(NO3)2 we need 2 moles of KI to produce 2 moles of KNO3 and 1 mol of PbI2

For 0.454 moles KI we'll have 0.454/2 = 0.227 moles PbI2

Step 6: Calculate mass PbI2

Mass PbI2 = moles PbI2 * molar mass PbI2

Mass PbI2 = 0.227 moles * 461.01 g/mol

Mass PbI2 = 104.6 grams

104.6 grams of PbI2 (solid) will be produced

You might be interested in
Help please i give brainlist
shtirl [24]
The order of the answers are as follows:
B
C
D
A
5 0
3 years ago
Can I get some help?
Brut [27]
Yes, of course))))))
6 0
3 years ago
If the number of moles of gas is doubled at constant temperature and volume, the pressure of the gas:__________
Vladimir79 [104]

Answer:

answer is b

use pv=nRT

p directly proportional to moles(n)

p1/p2=n1/n2

p/p2=n/2n

p2=2p

4 0
3 years ago
I will not stop asking until someone answer hurry up already
Reil [10]

Answer:

Gravity.

Explanation:

4 0
2 years ago
The side chain (R group) of the amino acid serine is CH₂OH. The side chain of the amino acid leucine is CH₂CH(CH₃)₂. Where would
Crazy boy [7]

Answer:

The answer is B, Alanine would be in the interior and serine would be on the exterior of the globular protein.

Explanation:

To further explain, the nature of solubility of side chain determines the position of the amino acid in the globular protein.

The hydrophilic amino acid such as serine are on the outside of the globular protein while the hydrophic amino acids such as leucine and alanine are on the interior of the globular protein.

This is why Alanine would be in the interior and serine would be on the exterior of the globular protein.

Cheers!

4 0
3 years ago
Other questions:
  • Explain how heat is related to thermal energy
    10·2 answers
  • Two reasons why a scientist might want to study the DNA of strawberries?
    11·2 answers
  • The atomic radius of main group elements generally increases down a group because
    8·1 answer
  • A pure substance containing only one king of ______ .
    7·2 answers
  • Type the correct answer in the box. Express your answer to three significant figures.
    13·1 answer
  • 3. Which of the following substances is NOT an electrolyte? (1 point)
    7·1 answer
  • A reaction of 100mL of 1.35 M HCl and 100mL of 1.76 M NaOH is monitored and the following
    13·1 answer
  • How many grams of H2O will be produced if 8.08x1024 atoms of Fe are produced?
    7·1 answer
  • Method 70<br>Seprate a mixture Containing <br>Sodium chloride, Iron fillings and Water<br>​
    12·1 answer
  • Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!