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
kipiarov [429]
2 years ago
7

How much water should be added to 4.3 moles of LiBr to prepare a 2.05 m solution?

Chemistry
1 answer:
arsen [322]2 years ago
8 0

Answer:

2.1 kg of water

Explanation:

Step 1: Given data

  • Moles of lithium bromide (solute): 4.3 moles
  • Molality of the solution (m): 2.05 m (2.05 mol/kg)
  • Mass of water (solvent): ?

Step 2: Calculate the mass of water required

Molality is equal to the moles of solute divided by the kilograms of solvent.

m = moles of solute/kilograms of solvent

kilograms of solvent = moles of solute/m

kilograms of solvent = 4.3 mol /(2.05 mol/kg) = 2.1 kg

You might be interested in
The remains of plants and animals
nirvana33 [79]

Answer: The remains of plants and animals are called organic matter.

Explanation:

3 0
3 years ago
What do hydroelectric plants use to turn a turbine when producing electrical energy?
oksian1 [2.3K]
A. water
the word hydro means water
7 0
3 years ago
When air pressure is low what is the weather like​
kodGreya [7K]
When air pressure is low it is Cold
5 0
3 years ago
If 5. 0 grams of kcl is dissolved in 500 ml of water, what is the concentration of the resulting solution?
Lady_Fox [76]

If 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.

<h3>How to calculate concentration?</h3>

The concentration of a solution can be calculated by using the following formula;

Molarity = no of moles ÷ volume

According to this question, 5.0 grams of KCl is dissolved in 500 ml of water. The concentration is calculated as follows:

no of moles of KCl = 5g ÷ 74.5g/mol = 0.067mol

Molarity = 0.067mol ÷ 0.5L = 0.134M

Therefore, if 5.0 grams of KCl is dissolved in 500 ml of water, the concentration of the resulting solution will be 0.134M.

Learn more about concentration at: brainly.com/question/10725862

#SPJ1

6 0
2 years ago
We consider a spherical air bubble rising through a water tank. The pressurepinside the bubble isequal to its surrounding pressu
DENIUS [597]

The answer is a change in internal energy causes work to be done and heat to flow into the system.  

<u>Explanation:</u>

Boyle's law says, PV=RT

  • Here P represents the pressure, V represents the volume and T represents the temperature. R is a constant. The volume of an ideal gas is inversely proportional to its pressure if the temperature is constant.
  • When a bubble is present in deep water it has water pressure and atmospheric pressure. Then the Volume increases when water pressure raises which is proportional to the depth reduces.
  • But we should not finalize the volume of the bubble will be four-time as great as at the top than the bottom.  if the bottom of the lake is at four atmospheres, the temperature will not be equal to the top.
  • If the bubble travels from the bottom to the top or vice-versa, it's going to lose or gain heat in a way that must be quite hard to measure.
8 0
3 years ago
Other questions:
  • A 5.00-g sample of copper metal at 25.0 °C is heated by the addition of 133 J of energy. The final temperature of the copper is
    13·1 answer
  • Rebekah has a table that has a mass of 18.6 kg. What is the weight of the table?
    8·1 answer
  • A solar powered car converts __________ energy into _____________ energy.
    14·2 answers
  • The ph of a 0.30 m solution of a weak acid is 2.67. what is the ka for this acid?
    10·2 answers
  • I need help please thanks
    5·1 answer
  • The reaction P4 +502P4010 + 712 kcal is
    13·2 answers
  • Acetic acid and water react to form hydronium cation and acetate anion, like this:
    7·1 answer
  • Which of the following describes a study that is “longitudinal”?
    6·1 answer
  • What animal wins march mammal madness in 2021?
    10·1 answer
  • How many water molecules self ionize in one liter of water
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!