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
Identify the type of reaction shown by this chemical equation:<br>2AI + 6HCI - 2AlCl3 + 3H2​
ArbitrLikvidat [17]

Answer:

Single displacement reaction

Explanation:

2AI + 6HCI —> 2AlCl3 + 3H2

From the above reaction, we see clearly that Al displaces H from HCl. This is clearly a single displacement reaction.

5 0
3 years ago
The density of aluminum is 2.7 g/ml what is the volume of 8.1 g
Nikolay [14]
D = m / V

2.7 = 8.1 / V

V = 8.1 / 2.7

V = 3.0 mL
8 0
3 years ago
Read 2 more answers
When 50.0 g of 0.200 M NaCl(aq) at 24.1 °C is added to 100.0 g of 0.100 M AgNO3(aq) at 24.1 °C in a calorimeter, the temperature
Annette [7]

Answer:

Q = 693 J

Explanation:

NaCl (aq) + AgNO₃ (aq) → AgCl (s) + NaNO₃ (aq)

Q = mcΔT

Q: heat

m: mass

c: specific heat

ΔT: temperature variation

Q = (50.0g + 100.0g) x (4.20 J/g°C) x (25.2°C - 24.1°C)

Q = 693 J

4 0
4 years ago
Explain why the following are made of thermosetting plastics.
rusak2 [61]

Answer:

a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.

b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.

6 0
3 years ago
sugar dissolving in water was a good example of what kind of change? A. physical B. chemical C. Electical ​
Makovka662 [10]

Explanation:

A gas has a temperature of 100C at a pressure of 105atm. What is the temperature at 50 atm?

3 0
3 years ago
Other questions:
  • Suppose that 2.14 grams of H2SO4 is mixed with enough water to make 225 mL of solution. Determine the Molarity (M) of the soluti
    6·1 answer
  • Why does it take so long time to develop a new variety of tomato
    15·1 answer
  • What are seeds made out of?
    12·1 answer
  • Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation: Cr2O72− + 6Fe2+ + 14H+ → 2Cr3+ + 6Fe
    12·1 answer
  • Helpppppppppppppppppppppppppp
    5·1 answer
  • A hypothetical wave has 4.6 J of energy. What is its hypothetical, approximate frequency?
    8·1 answer
  • Question 3 of 5
    8·2 answers
  • Atoms or helium nickel would represent _____
    9·1 answer
  • Can someone give me a simple example of a exothermic reaction? Would a campfire be one?
    7·1 answer
  • 3. 6 th grade Question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!