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
geniusboy [140]
3 years ago
12

At 25.0°c, a solution has a concentration of 3.179 m and a density of 1.260 g/ml. the density of the solution at 50.0°c is 1.249

g/ml. what is the molarity of the solution at 50.0 °c?
Chemistry
1 answer:
oksano4ka [1.4K]3 years ago
7 0

Answer: -

3.151 M

Explanation: -

Let the volume of the solution be 1000 mL.

At 25.0 °C, Density = 1.260 g/ mL

Mass of the solution = Density x volume

= 1.260 g / mL x 1000 mL

= 1260 g

At 25.0 °C, the molarity = 3.179 M

Number of moles present per 1000 mL = 3.179 mol

Strength of the solution in g / mol

= 1260 g / 3.179 mol = 396.35 g / mol (at 25.0 °C)

Now at 50.0 °C

The density is 1.249 g/ mL

Mass of the solution = density x volume = 1.249 g / mL x 1000 mL

= 1249 g.

Number of moles present in 1249 g = Mass of the solution / Strength in g /mol

= \frac{1249 g}{396.35 g/mol}

= 3.151 moles.

So 3.151 moles is present in 1000 mL at 50.0 °C

Molarity at 50.0 °C = 3.151 M

You might be interested in
What volume of stock solution and water must you add to prepare 36.25ml of a 1.25M solution
Serjik [45]

Given :

Number of moles , n = 36.25 mol .

Molarity , M = 1.25 M .

To Find :

The volume of water required .

Solution :

Moarity is given by :

M=\dfrac{n}{V}

So , V=\dfrac{n}{M}

Here , n is number of moles and M is molarity .

Putting all values in above equation , we get :

V=\dfrac{36.25}{1.25}\\\\V=29\ L

Therefore , volume of water required is 29 L .

5 0
3 years ago
In stoichiometric calculations, which quantity MUST be used to convert from one chemical substance to another?
Cloud [144]

The answer is

C) mole ratio

4 0
2 years ago
Which statement is true about sodium hydroxide (NaOH)?
Naya [18.7K]
It's a base because it increases the concentration of hydroxid ions
3 0
3 years ago
Read 2 more answers
What type of mixture is this salad dressing
melisa1 [442]
I believe that would be oil and vinegar.

5 0
3 years ago
Read 2 more answers
What happens to an electron when it emits a photon
Flura [38]

Answer:

when electron emit the radiations it means it jumped to the lower energy level from higher energy level.

Explanation:

When electron jump into lower energy level from high energy level it loses the energy.

The process is called de-excitation.

Excitation:

When the energy is provided to the atom the electrons by absorbing the energy jump to the higher energy levels. This process is called excitation. The amount of energy absorbed by the electron is exactly equal to the energy difference of orbits.

De-excitation:

When the excited electron fall back to the lower energy levels the energy is released in the form of radiations. this energy is exactly equal to the energy difference between the orbits. The characteristics bright colors are due to the these emitted radiations. These emitted radiations can be seen if they are fall in the visible region of spectrum.

7 0
4 years ago
Other questions:
  • What is the noble gas configuration of lithium? (li)?
    6·1 answer
  • Simularities between nonmetals and metalloids?
    9·1 answer
  • An isotope undergoes radioactive decay by emitting radiation that has no mass. What other characteristic does the radiation have
    6·2 answers
  • There are four equal-sized bowls with equal amounts of milk.
    5·1 answer
  • Show how the following are formed
    5·1 answer
  • How does being able to understand the interactions of natural systems, such as weather, benefit society? How are the scientific
    5·2 answers
  • A chlorine (CI) atom has 7 valence electrons. Which of the following would be the most likely way for a chlorine atom to become
    9·1 answer
  • The following image shows the Atomic level of an element. In the image, which of
    8·1 answer
  • Which image shows 2-hexyne?
    12·1 answer
  • QUICKKK
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!