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
Consider this reaction:
ryzh [129]

Answer:

I think it's 6 moles are produced

3 0
2 years ago
During an experiment a thermometer was placed in a beaker containing hydrogen peroxide. The following observations were recorded
Rudiy27

Answer:

Chemical

Explanation:

The change was chemical, because it can no longer be returned to the original form. You cannot get back the bubbles or fizz from the air.

3 0
3 years ago
Read 2 more answers
What is the best explanation for the frequency of eclipses?
Katarina [22]

Answer:A

Explanation:

7 0
3 years ago
32.7 grams of water vapor takes up how many liters at standard temperature and pressure (273 K and 100 kPa)?
kotegsom [21]
Under standard temperature and pressure conditions, it is known that 1 mole of a gas occupies 22.4 liters.

From the periodic table:
molar mass of oxygen = 16 gm
molar mass of hydrogen = 1 gm
Thus, the molar mass of water vapor = 2(1) + 16 = 18 gm

18 gm of water occupies 22.4 liters, therefore:
volume occupied by 32.7 gm = (32.7 x 22.4) / 18 = 40.6933 liters

5 0
3 years ago
What trend in ionization energy occurs across a period on the periodic table?
Marianna [84]

The trend  in ionization energy that occurs  across  a period   on  periodic table is that

Ionization  energy of elements within a period  generally increases  from left to the right.

<u><em>explanation</em></u>


 Ionization energy  is energy  required to remove an electron from gaseous  atom or ion.

 The  ionization energy  increase across the period because, as  you move  across  the period (from the left to  the right)   the atomic radius  decrease.  

This make outer  electrons to be  closer to the nucleus and more attracted to the  center.Therefore it is hard to remove electron  as you move across the period.


8 0
3 years ago
Other questions:
  • When lithium reacts with bromine to form the compound LiBr, each lithium atom:
    14·2 answers
  • Which grouping of the three phases of chlorine is listed in order from left to right for increasing distance between chlorine mo
    10·1 answer
  • The volume of a gas is increased from 0.5 L to 4.0 L while the temperature is held constant. The pressure of the gas will go fro
    12·1 answer
  • The ph of lemon juice is approximately 2.4. at this ph, the hydronium ion concentration is closest to which value? 1. 250 m 2. 4
    11·2 answers
  • A limestone plateau has no surface water. All the water is pulled underground through cracks and crevices in the surface. What m
    11·1 answer
  • Ionic bonds form when electrons are-
    10·1 answer
  • Determine the molecular geometry of SeF4.
    8·1 answer
  • Which of these would be found in a wetland?
    7·2 answers
  • Can someone help me please. Will mark brainliest!<br> Which equation shows an increase in entropy?
    7·1 answer
  • How much energy would be released as an electron moved from the n=4 to the n=3 energy level?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!