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
Stels [109]
3 years ago
15

How many kilograms of chlorine are in 21 kg of CF2Cl2

Chemistry
2 answers:
Aloiza [94]3 years ago
6 0

Answer : The mass of chlorine present in sample is 12.32 kilograms.

Explanation :  Given,

Mass of CF_2Cl_2 = 21 kg = 21000 g     (1 kg = 1000 g)

First we have to calculate the moles of CF_2Cl_2.

Molar mass of CF_2Cl_2 = 121 g/mole

\text{ Moles of }CF_2Cl_2=\frac{\text{ Mass of }CF_2Cl_2}{\text{ Molar mass of }CF_2Cl_2}=\frac{21000g}{121g/mole}=173.5moles

Now we have to calculate the moles of chlorine.

In the molecule CF_2Cl_2, there are 1 mole of carbon, 2 moles of fluorine and 2 moles of chlorine.

As, 1 mole of CF_2Cl_2 contains 2 moles of chlorine

So, 173.5 moles of CF_2Cl_2 contains 173.5\times 2=347 moles of chlorine

Now we have to calculate the mass of chlorine.

\text{ Mass of chlorine}=\text{ Moles of chlorine}\times \text{ Molar mass of chlorine}

Molar mass of chlorine = 35.5 g/mole

\text{ Mass of chlorine}=(347moles)\times (35.5g/mole)=12318.5g=12.32kg

Therefore, the mass of chlorine present in sample is 12.32 kilograms.

Alik [6]3 years ago
5 0

21 kg x [(3 x 35.45)/(12.01 + 19.00 + (3 x 35.45))] =  

21 kg x (106.35/137.36) = 16.3 kg of chlorine  

You just multiply the weight of the material by the fraction of chlorine (by weight). The others are done the same way

You might be interested in
PLEASE HELP QUICK!! WILL MARK BRAINLIEST ANSWER!! When water is diffused across a selectively permeable membrane, scientists ref
xxTIMURxx [149]

Answer :

During diffusion, when the concentration of the molecules on both sides of the membrane is the same, the molecules will continue to move across the membrane in both the direction.

Answer 3 : It allows single-celled organism to reproduce, and other organism to repair damage tissues and grow.

Answer 4: The nucleus is an organelle that is surrounded by the cytoplasm, a jelly-like fluid.

Explanation :

Diffusion : It is a process where liquid moves from higher concentration to the lower concentration through permeable membrane.

When the concentration of the molecules on both sides of the membrane is same and the membrane is permeable membrane then diffusion will occur and the molecules will moves continuously across the membrane in both the direction.

Answer 3 :

Mitosis : It is a process of cell division. In this process, nucleus divides into two daughter cell and each daughter cell contains same number of chromosomes as present in parent nucleus.

The main purpose of the mitosis is to repair damaged tissues and growth.

Answer 4 :

Nucleus is a type of cell organelle. It is present in both animal and plant cells and it is the brain of the cell. It is present only in eukaryotic cell.

Nucleus is an organelle which is surrounded by the cell membrane which protects its from the other cells.

Cytoplasm is a jelly-like fluid which is present in the cell membrane which is made up of salt and water.


 

7 0
3 years ago
Balence the following equation : _____ NH3 --------> _____ N2 + _____ H2
Ksenya-84 [330]

2 NH3 -> 1 N2 + 3 H2

Explanation:

That would be the answer to this

8 0
3 years ago
What 2 properties make capillary action possible
Natali5045456 [20]
Cohesion and adhesion
7 0
3 years ago
Which buffer would be better able to hold a steady pH on the addition of strong acid, buffer 1 or buffer 2? Explain. Buffer 1: a
Talja [164]

Answer:

Buffer 1.

Explanation:

Ammonia is a weak base. It acts like a Bronsted-Lowry Base when it reacts with hydrogen ions.

\rm NH_3\; (aq) + H^{+}\; (aq) \to {NH_4}^{+}\; (aq).

\rm NH_3 gains one hydrogen ion to produce the ammonium ion \rm {NH_4}^{+}. In other words, \rm {NH_4}^{+} is the conjugate acid of the weak base \rm NH_3.

Both buffer 1 and 2 include

  • the weak base ammonia \rm NH_3, and
  • the conjugate acid of the weak base \rm {NH_4}^{+}.

The ammonia \rm NH_3 in the solution will react with hydrogen ions as they are added to the solution:

\rm NH_3\; (aq) + H^{+}\; (aq) \to {NH_4}^{+}\; (aq).

There are more \rm NH_3 in the buffer 1 than in buffer 2. It will take more strong acid to react with the majority of \rm NH_3 in the solution. Conversely, the pH of buffer 1 will be more steady than that in buffer 2 when the same amount of acid has been added.

5 0
3 years ago
b)Elemental boron (as a gas) is produced in one industrial process by heating diboron trioxide with magnesium metal, also produc
dlinn [17]

<u>Answer:</u> The unbalanced chemical equation is written below.

<u>Explanation:</u>

Unbalanced chemical equation does not follow law of conservation of mass.

In an unbalanced chemical equation, total number of individual atoms on the reactant side will not be equal to the total number of individual atoms on the product side.

The chemical equation for the reaction of diboron trioxide and magnesium metal follows:

B_2O_3(s)+Mg(s)\rightarrow B(g)+MgO(s)

Hence, the unbalanced chemical equation is written above.

5 0
3 years ago
Other questions:
  • Monobromination of toluene gives a mixture of three bromotoluene products. Draw and name them.
    15·1 answer
  • If solar panels are placed under the sun at noon, then they will produce more energy than solar panels placed in the sun at dawn
    14·1 answer
  • Scientific inquiry attempts to search out, describe, explain, and predict things that happen in nature. Which of the following b
    7·2 answers
  • Which element has a radioactive isotope that is often used to date rocks younger than about 60,000 years?
    8·1 answer
  • How does the rider’s ability to stop the bike change as the bike moves down a steep hill
    12·1 answer
  • An example of an organic sedimentary rock used as fuel would be?
    7·1 answer
  • Joshua wants to create something to put between a hot pot and a table, so he doesn't burn the table. He
    9·1 answer
  • In leaves, the conducting tissues are found in the
    10·1 answer
  • What is the substance? cdH) (Η) (Η<br> (H)C<br> cco<br> Ή) (Η<br> Η<br> Η
    15·1 answer
  • Predict the missing component of predict the missing component of each reaction.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!