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
miss Akunina [59]
3 years ago
8

!!!Need answer for chem homework ASAP PLS !!!!

Chemistry
1 answer:
stealth61 [152]3 years ago
7 0

Answer:

The answer to your question is: kc = 6.48

Explanation:

Data

             Given                 Molecular weight

CaO =    44.6 g                    56 g

CO₂ =     26 g                       44 g

CaCO₃ = 42.3 g                  100 g

Find moles

        CaO                 56 g ----------------  1 mol

                                 44.6 g --------------   x

                               x = (44.6 x 1) / 56 = 0.8 mol

        CO₂                 44 g -----------------  1 mol

                                26 g ----------------    x

                               x = (26 x 1 ) / 44 = 0.6  moles

        CaCO₃            100 g ---------------   1 mol

                                42.3g --------------    x

                              x = (42.3 x 1) / 100 = 0.423 moles

       

Concentrations

 

        CaO     =    0.8 / 6.5  = 0.12 M

         CO₂    =     0.6 / 6.5 = 0.09 M

        CaCO₃  =   0.423 / 6.5 = 0.07 M

Equilibrium constant =   \frac{[products]}{[reactants]}

Kc = [0.07] / [[0.12][0.09]

Kc = 0.07 / 0.0108

kc = 6.48

You might be interested in
The air pressure for a certain tire is 113 KPa. What is the pressure I’m atmosphere
Fynjy0 [20]

Answer: 1.11 atm

Explanation:

The unit of pressure include kilopascal (kPa), atmospheres (atm), mmHg etc

Now, given that:

Air pressure = 113 KPa

Convert kPa to atm

If 101.325 kPa = 1 atm

113 kPa = Z atm

To get the value of Z, cross multiply

Z atm x 101.325 kPa = 1 atm x 113 kPa

Z = ( 1 atm x 113 kPa) / 101.325 kPa

Z = 1.11 atm

Thus, the pressure is 1.11 atm

7 0
3 years ago
What do you understand by<br> eclipse?<br>​
masya89 [10]

Explanation:

i understand the eclipse is often used to describe solar eclipse and when the moons shadow crosses Earth surface or it's when the moon moves into Earths shadow

6 0
3 years ago
The United States rallied to the aid of Cuba in 1898 mainly because it
Mkey [24]
The answer is C Had a military base to protect
6 0
3 years ago
Read 2 more answers
Which of the following limits a population's growth?
Svetllana [295]

Answer: Limitations to population growth are either density-dependant or density-independent. Density-dependent factors include disease, competition, and predation. Density-dependant factors can have either a positive or a negative correlation to population size.

Explanation:

6 0
3 years ago
Pls hellpppppp!!!!!!!!!!!!!!!!
sleet_krkn [62]

Answer:

what is it I don't see anything

3 0
2 years ago
Read 2 more answers
Other questions:
  • Distinguish between metal and non metal with example
    12·2 answers
  • Conductors have(blank) <br> resistance.<br><br> Moderate. <br> Very High. <br> Very low.
    7·1 answer
  • Calculate the total volume of gas produced at 22 c and 1.02 atm by the complete decomposition of 11.83 g of potassium chlorate
    10·1 answer
  • Why is the atomic theory a scientific one
    5·1 answer
  • Be sure to answer all parts. Find the pH of the equivalence point and the volume (mL) of 0.0608 M KOH needed to reach the equiva
    10·1 answer
  • Which is the most important factor in determining the state of a substance?
    7·2 answers
  • You place a balloon in a closed chamber at standard temperature and pressure (STP) . You double the chamber temperature while le
    5·1 answer
  • How does Earth's rotation affect ocean currents?
    7·1 answer
  • What is the charge of the nucleus ? Why ?
    8·1 answer
  • Formaldehyde, CH20, and acetic acid, C2H4O2, have the same empirical formula but different?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!