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Studentka2010 [4]
3 years ago
11

Which of the following statements best explains why soil is a renewable resource? A. Wind and water cause soil erosion, which co

nstantly replaces old soil with new soil. B. Organic matter constantly replaces itself and provides nutrients for plants. C. Deforestation provides a constant source of organic matter, which produces nutrients for plant growth. D. Farmers constantly rotate their crops, preventing leaching and erosion.
Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
6 0
<h3>Answer: A                                                                                                                   hope it helps                                                                                                           </h3>
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Consider the reaction to produce methanolCO(g) + 2H2 (g) &lt;-----&gt; CH3OHAn equilibrium mixture in a 2.00-L vessel is found t
MariettaO [177]

Answer : The value of K_c of the reaction is 10.5 and the reaction is product favored.

Explanation : Given,

Moles of CH_3OH at equilibrium = 0.0406 mole

Moles of CO at equilibrium = 0.170 mole

Moles of H_2 at equilibrium = 0.302 mole

Volume of solution = 2.00 L

First we have to calculate the concentration of CH_3OH,CO\text{ and }H_2 at equilibrium.

\text{Concentration of }CH_3OH=\frac{\text{Moles of }CH_3OH}{\text{Volume of solution}}=\frac{0.0406mole}{2.00L}=0.0203M

\text{Concentration of }CO=\frac{\text{Moles of }CO}{\text{Volume of solution}}=\frac{0.170mole}{2.00L}=0.085M

\text{Concentration of }H_2=\frac{\text{Moles of }H_2}{\text{Volume of solution}}=\frac{0.302mole}{2.00L}=0.151M

Now we have to calculate the value of equilibrium constant.

The balanced equilibrium reaction is,

CO(g)+2H_2(g)\rightleftharpoons CH_3OH(g)

The expression of equilibrium constant K_c for the reaction will be:

K_c=\frac{[CH_3OH]}{[CO][H_2]^2}

Now put all the values in this expression, we get :

K_c=\frac{(0.0203)}{(0.085)\times (0.151)^2}

K_c=10.5

Therefore, the value of K_c of the reaction is, 10.5

There are 3 conditions:

When K_{c}>1; the reaction is product favored.

When K_{c}; the reaction is reactant favored.

When K_{c}=1; the reaction is in equilibrium.

As the value of K_{c}>1. So, the reaction is product favored.

7 0
3 years ago
What type of molecule is acetylacetone?
Amanda [17]
Alcohol djjskanfjsns d is
6 0
3 years ago
Read 2 more answers
What are energy levels
soldi70 [24.7K]

Answer:

set distances were electrons can be sensed.

Explanation:

Energy levels are set distances from the nucleus of the atom where electrons can be sensed. Electrons are small, negatively charged particles in the atom that pass through the positive nucleus in the center. The energy levels are a little like the steps of the stairs. You may stand on one step or the other, but not between the moves. The same thing goes with electrons. 

hope this helped!

5 0
3 years ago
Which law states that the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant
Romashka [77]

Answer:

Gay-Lussac’s law

Explanation:

Gay-Lussac’s law is one of the gas laws discovered and proposed by a French scientist called Joseph Gay Lussac (1778 - 1850). In this law, it is stated that the pressure (P) of a gas varies directly with the absolute temperature (T) at a constant volume.

That is;

: P ∝ T

: P/T = K

Where:

P = pressure exerted by the gas

T = absolute temperature of the gas

K = the constant.

Hence, according to this question, the law that states that "the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant volume conditions" is Gay-Lussac’s law.

5 0
3 years ago
Which of the following is a physical change. A piece of magnesium metal formed bubbles when dropped in acid
uysha [10]

H2O became a vapor when heated because thats the only one that can go back to its normal state, which is what a physical change is.


3 0
3 years ago
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