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
Aleks [24]
3 years ago
13

How many liters of water are needed to make a 4.00 M solution using 75.0

Chemistry
1 answer:
timurjin [86]3 years ago
7 0

Answer:

0.22L

Explanation:

Given parameters:

Concentration of solution  = 4.00M

Mass of lithium Bromide  = 75g

Unknown:

Volume of water  = ?

Solution:

Concentration in terms of the molarity is the number of moles of solute in a solution.

   Molarity  = \frac{number of moles }{volume of solution}

let us find the number of moles first;

Number of moles  = \frac{mass}{molar mass}  

  Molar mass of LiBr =  7 + 80  = 78g/mol

                                 number of moles  = \frac{75}{78}

                                 number of moles  = 0.96moles

Volume of water  = \frac{number of moles }{molarity}   = 0.96/4 = 0.22L

You might be interested in
What is the difference between Renewable Energy and Non renewable Energy? Which one is better for the environment and why? Also
goblinko [34]

Answer:

The difference between them is that renewable energy is something that can be used practically and not run out. Non-renewable energy has a limited supply.

Explanation:

Renewable energy is better for the environment as it is not something that takes millions of years to form, as some non-renewable energy sources are.

Brainliest please! :>

6 0
2 years ago
Read 2 more answers
Which sample of matter is classified as a substance?<br> (1) air (3) milk(2) ammonia (4) seawater
jeyben [28]
A chemical substance has the characteristics that it cannot be separated by physical  methods. Seawater and milk can be separated by sedimentation, and air has different components depending on other aspects (such as elevation). Only ammonia is a substance. (thus it can have a formula: NH<span>3)</span>
3 0
3 years ago
Descuss how to find the oldest paper in a stack of papers
deff fn [24]
It is by looking on the dates of the paper.

Hoped this helped.

~Bob Ross®
8 0
3 years ago
Read 2 more answers
Which material is likely to slow the flow of electric charges the most? Explain
vesna_86 [32]

Answer:

The material that would most likely slow the flow of electricity is plastic.

Explanation:

Plastic is a conductor. A conductor is something that stop or slows down the flow of electricity.

4 0
3 years ago
How is enthalpy used to predict whether a reaction is endothermic or exothermic?
Sever21 [200]
<span>The value of enthalpy of a reaction can be a useful tool in determining the type of reaction it is. If the enthalpy is negative the reaction is exothermic and if the enthalpy is positive the reaction is endothermic. Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
Other questions:
  • Can you please find the answer key for this from internet?
    12·1 answer
  • What combines to form bonds in compounds? A. atoms of elements B. molecules C. types of minerals D. valences
    10·1 answer
  • In the 19th century James Joule, an English scientist, was the first to recognize the mechanical equivalent of heat as a specifi
    14·1 answer
  • What is a barometer?
    5·2 answers
  • Which of the following pure compounds will exhibit hydrogen bonding?
    5·1 answer
  • What is the concentration of a 300 mL solution containing 0.27 mol of glucose?
    13·1 answer
  • What is the compound SCI2
    15·1 answer
  • Ag, CO,<br> Find out the stock system thank you
    8·1 answer
  • What is the value of 100 ºC on the Kelvin scale? A. 100 K B. 273 K C. 373 K D. -373 K E. -300 K
    11·2 answers
  • Under certain conditions, what is a chlorine atom able to do to a sodium atom?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!