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
vitfil [10]
2 years ago
11

What is the concentration of kl solution if 20.68g of solute was added to enough water to form 100ml solution?

Chemistry
1 answer:
rewona [7]2 years ago
5 0

Answer:

1.25 M

Explanation:

Step 1: Given data

Mass of KI (solute): 20.68 g

Volume of the solution: 100 mL (0.100 L)

Step 2: Calculate the moles of solute

The molar mass of KI is 166.00 g/mol.

20.68 g × 1 mol/166.00 g = 0.1246 mol

Step 3: Calculate the molar concentration of KI

Molarity is equal to the moles of solute divided by the liters of solution.

M = 0.1246 mol/0.100 L= 1.25 M

You might be interested in
Calculate the number of moles in the 2.1-L volume of air in the lungs of the average person. Note that the air is at 37.0ºC (bod
adelina 88 [10]
Answer: 0.0826mol

PV=nRT
n=PV/RT
n=(1atm)(2.1L)/(310K)(0.082057L*atm/mol*K)=0.0826mol
7 0
3 years ago
In a coffee-cup calorimeter, 100.0 g of H2O and 100.0 mL of 1M HCl are mixed. The HCl had an initial temperature of 44.6 C and t
Hatshy [7]

Answer:

Exothermic reaction for the HCl, endothermic reaction for the water

2803.28\ \text{J}

Explanation:

Heat was lost by HCl as its temperature lowered, so it was an exothermic reaction for the HCL.

Heat was gained by water as its temperature increased, so it was an endothermic reaction for the water.

m = Mass of water = 100 g

c = Specific heat of water = 4184\ \text{J/kg}^{\circ}\text{C}

\Delta T = Change in temperature of water = (31.3-24.6)^{\circ}\text{C}

Heat is given by

Q=mc\Delta T\\ =0.1\times 4184\times (31.3-24.6)\\ =2803.28\ \text{J}

Heat gained by water is 2803.28\ \text{J}.

5 0
3 years ago
Which of these is a mixture of particles that are large enough to scatter or block light
Daniel [21]
The answer is C. because <span>particles settle out over time ,can block light and scatter light .</span>
5 0
3 years ago
Draw the following isomers of the alkanes of molecular formula C-H16
Andre45 [30]

I don't know how to draw it but I can solve it

7 0
3 years ago
For the following questions, use a periodic table and your atomic calculations to find the unknown information about each isotop
mafiozo [28]

Answer:

Option B is correct.

4

Explanation:

We know that an atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example, if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

In given problem we are given with 2 neutrons of helium. We know that the atomic number of He is 2. Thus Mass number of He is,

Number of neutrons + number of proton

2 + 2 = 4

Thus, option B is correct.

7 0
3 years ago
Other questions:
  • What is the mass of 2.3 moles of MgCl2?
    9·1 answer
  • How does the attraction between particles affect the ability of a solvent to dissolve in a substance
    9·2 answers
  • How do farmers work to prevent wind erosion of topsoil
    5·1 answer
  • Which statements best describe displacement? Check all that apply. Displacement is measured along the path an object travels. Di
    12·2 answers
  • Help!! Thank you so much ❤️
    11·1 answer
  • Write the net ionic equation for the reaction that takes places between aqueous copper and nitrate.
    7·1 answer
  • if you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer
    9·2 answers
  • Explain the following terms Sublimation
    13·1 answer
  • Name this alkane.
    6·2 answers
  • Rubidium (Rb) has two isotopes. Using the data in the table below,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!