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Gala2k [10]
3 years ago
15

What is a salt? A compound formed from a(n) from an acid and a(n) from a base.

Chemistry
2 answers:
Ghella [55]3 years ago
6 0
Salt is a chemical compound formed for the reaction of an acid with a base.
slamgirl [31]3 years ago
5 0

Answer:  A compound formed from a ANION from an acid and a CATION of a base.

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The dissociation of calcium carbonate has an equilibrium constant of Kp= 1.20 at 800°C. CaCO3(s) ⇋ CaO(s) + CO2(g)
Fed [463]

Explanation:

(a)   Formula that shows relation between K_{c} and K_{p} is as follows.

                 K_c = K_p \times (RT)^{-\Delta n}

Here, \Delta n = 1

Putting the given values into the above formula as follows.

        K_c = K_p \times (RT)^{-\Delta n}

                  = 1.20 \times (RT)^{-1}

                  = \frac{1.20}{0.0820 \times 1073}

                  = 0.01316

(b) As the given reaction equation is as follows.

               CaCO_{3}(s) \rightleftharpoons CaO(s) + CO_{2}(g)

As there is only one gas so ,

                p[CO_{2}] = K_{p} = 1.20

Therefore, pressure of CO_{2} in the container is 1.20.

(c)   Now, expression for K_{c} for the given reaction equation is as follows.  

             K_{c} = \frac{[CaO][CO_{2}]}{[CaCO_{3}]}

                        = \frac{x \times x}{(a - x)}

                        = \frac{x^{2}}{(a - x)}[/tex]

where,    a = initial conc. of CaCO_{3}

                  = \frac{22.5}{100} \times 9.56

                  = 0.023 M

          0.0131 = \frac{x^{2}}{0.023 - x}

                  x = 0.017

Therefore, calculate the percentage of calcium carbonate remained as follows.

       % of CaCO_{3} remained = (\frac{0.017}{0.023}) \times 100

                                  = 75.46%

Thus, the percentage of calcium carbonate remained is 75.46%.

3 0
4 years ago
Which of the following reactants will generate products with a solution of phosphoric acid?
Hatshy [7]

Answer:

A. Al(s)

Explanation:

4 0
3 years ago
Calculate the number of moles in 79.17 g of magnesium chloride
natulia [17]
There would be 0.8315 moles
7 0
3 years ago
All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement.
BigorU [14]

Answer:

Option B

Explanation:

All people who are asked to testify in a criminal case must first be issued a subpoena by law enforcement, is a "false statement" or option B. A subpoena is a request to appear in court which is usually given out by the attorneys who are a part of the case, the law enforcement does not give out subpoenas, so this is indeed a false statement.

Hope this helps.

7 0
3 years ago
Sugar is used to fill a box that has a volume of 200 cm3. The sugar weighs 316 grams. What is the density of sugar? (Ignore the
lions [1.4K]

<u>Answer:</u> The density of sugar is 1.58g/cm^3

<u>Explanation:</u>

To calculate the density of a substance, we use the equation:

Density=\frac{Mass}{Volume}

We are given:

Mass of sugar = 316 g

Volume of box = 200cm^3

Putting values in above equation, we get:

\text{Density of sugar}=\frac{316g}{200cm^3}\\\\\text{Density of sugar}=1.58g/cm^3

Hence, the density of sugar is 1.58g/cm^3

3 0
3 years ago
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