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Ket [755]
3 years ago
15

What part of a plant is mostly likely to grow toward a light source

Chemistry
1 answer:
ohaa [14]3 years ago
5 0
Mainly the stem but sometimes it can be the roots and leaves
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kirill115 [55]

Answer:c c c c c c c c c c c c c c c c c c c c c c c c c c cc c c c c c c c c

cc

Explanation:

6 0
3 years ago
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 is a true statement about an exterior angle of a triangle?
wolverine [178]

The only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.

<h3>What is a triangle?</h3>

A triangle can be defined as a one of the plane shapes which has three sides and three angles

So therefore, the only true statement about an exterior angle of a triangle from the above is that it forms a linear pair with one of the interior angles of the triangle.

Learn more about triangles:

brainly.com/question/2217700

#SPJ1

7 0
2 years ago
8. Which state of matter takes both the shape and volume of its container?
Leno4ka [110]

Answer:

C.

Explanation:

A gas can expand to fill any volume and takes the shape of the container.

6 0
3 years ago
Read 2 more answers
What is the median of the following set: 2, 4, 6, 8, and 10?
labwork [276]

Answer:9

Explanation:

(3+8+10+15)/4 = 36/4 = 9

6 0
3 years ago
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