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
jenyasd209 [6]
2 years ago
13

What volume of a 1.5 M KOH solution is needed to provide 3.0 moles of KOH?

Chemistry
1 answer:
Brums [2.3K]2 years ago
8 0

Answer:

  • Volume = <u>2.0 liter</u> of 1.5 M solution of KOH

Explanation:

<u>1) Data:</u>

a) Solution: KOH

b) M = 1.5 M

c) n = 3.0 mol

d) V = ?

<u>2) Formula:</u>

Molarity is a unit of concentration, defined as number of moles of solute per liter of solution:

  • M = n / V in liter

<u>3) Calculations:</u>

  • Solve for n: M = n / V ⇒ V = n / M

  • Substitute values: V = 3.0 mol / 1.5 M = 2.0 liter

You must use 2 significant figures in your answer: <u>2.0 liter.</u>

You might be interested in
To pull up a bucket of water from a well, George pulled hard on a handle to wind up a rope. Which kind of energy was George appl
mote1985 [20]

b frictional energy

is the correct answer

4 0
2 years ago
What is the molarity of a solution that contains 4.3 mol of acetic acid (C2H3O2) in 450. mL of solution?
lord [1]

Hey there !


Number of moles of solution: 4.3 moles

Volume in liters:

450.0 mL / 1000 => 0.45 L

Therefore:

Molarity = number of moles / volume of solution ( L)

Molarity = 4.3 / 0.45

=> 9.55 M

Hope that helps!

3 0
3 years ago
Question
madam [21]

Answer:

The specific heat of the metal is 2.09899 J/g℃.

Explanation:

Given,

For Metal sample,

mass = 13 grams

T = 73°C

For Water sample,

mass = 60 grams

T = 22°C.

When the metal sample and water sample are mixed,

The addition of metal increases the temperature of the water, as the metal is at higher temperature, and the  addition of water decreases the temperature of metal. Therefore, heat lost by metal is equal to the heat gained by water.

Since, heat lost by metal is equal to the heat gained by water,

Qlost = Qgain

However,

Q = (mass) (ΔT) (Cp)

(mass) (ΔT) (Cp) = (mass) (ΔT) (Cp)

After mixing both samples, their temperature changes to 27°C.

It implies that , water sample temperature changed from  22°C to 27°C and metal sample temperature changed from 73°C to 27°C.

Since, Specific heat of water = 4.184 J/g°C

Let Cp be the specific heat of the metal.

Substituting values,

(13)(73°C - 27°C)(Cp) = (60)(27°C - 22℃)(4.184)

By solving, we get Cp =

Therefore, specific heat of the metal sample is 2.09899 J/g℃.

5 0
3 years ago
This map shows the ages of the Atlantic oceanic crust
tamaranim1 [39]
No
Of course not cause it will only locate where the ocean is , it will not show the age.
4 0
2 years ago
How many moles of KClO3 are produced from 25 moles of KCL
e-lub [12.9K]

Answer: 25

Explanation:

8 0
2 years ago
Other questions:
  • Two different liquids are mixed together. Which observation indicates that an exothermic chemical reaction has taken place?
    12·2 answers
  • What is the mass of 3.01 X 1023 atoms of iron? (atomic mass of Fe=56)
    6·1 answer
  • The heat transfer in the picture is most likely:
    8·1 answer
  • Vigorous stirring significantly increases . . . A. the effective surface area for phase transfer B. the effective concentration
    9·1 answer
  • I need to know numbers 6, 7, and 8.
    6·1 answer
  • What days did the Catholic Church h celebrate with fireworks
    7·2 answers
  • What does a metal need to do in order to form a cation
    6·2 answers
  • How many milliliters of an aqueous solution of 0.227 M sodium carbonate is needed to obtain 3.55 grams of the salt?
    15·1 answer
  • 4. Look at the image below. If a virus wiped out the mussel population, explain what
    7·1 answer
  • The rate constant, k, for a reaction is 0.0354 sec1 at 40°C. Calculate the rate constant for the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!