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madreJ [45]
3 years ago
8

Why does the fact that Americans are using less fertilizer not indicate a decline in American farming?

Chemistry
2 answers:
meriva3 years ago
4 0
It shows that the population is moving towards a more organic and natural way of growing crops. Rather than using fertilizer and putting toxins on the plants that we eat from, we are getting smarter and growing food naturally. Thus not killing ourselves in the process.

Svetllana [295]3 years ago
4 0

Answer:

The decrease in fertilizer use does not mean that there is a decrease in agricultural production in America. On the contrary, there could be an increase in production even using fewer fertilizers.

The reason is simple, THE TECHNOLOGY.

Explanation:

Currently there are many new methods to save fertilizer products in the field and make crops more efficient. This is called precision agriculture.

With these methods, for example, images taken with drones or satellites (with multispectral or hyperspectral cameras) can be used to assess the status of a crop, the lack of nutrients from the soil, and even if there are pests or diseases on the plats; All this allows the farmer to apply the fertilizer or other products, only in the area that presents the problem and not in the entire crop.

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Answer the following questions that relate to electrochemical reactions. (a) Under standard conditions at 25˚C, Zn(s) reacts wit
Elanso [62]

Answer:

0.48 V

Explanation:

Zn(s) ------------> Zn^2+(aq) + 2e. Oxidation half equation (-0.76V)

Co^2+(aq) + 2e-----------> Co(s). Reduction half equation (-0.28)

Zn(s) + Co^2+(aq) -------------> Zn^2+(aq) + Co(s) overall redox equation

Zinc is the anode while cobalt is the cathode.

E°cell= E°cathode - E°anode

E°cell= -0.28-(-0.76)= 0.48 V

7 0
3 years ago
Read 2 more answers
5. __NH3 + __O2 >>>>>__ NO +__ H20
inn [45]
2 NH3+ 2 O2 —> 2 NO+ 3 H2O
5 0
3 years ago
When you have a free metal ion, how do the energies of these orbitals relate to one another (are they the same, different, etc.)
7nadin3 [17]

Answer:

The energy of the orbitals are the same

Explanation:

For a free metal ion, all the d-orbitals are of the same energy. The five d-orbitals are said to be five fold degenerate in the free metal ion. Hence all the d-orbitals will possess the same energy irrespective of which one is first filled.

In an octahedral or tetrahedral crystal field, the d-orbitals will loose their degeneracy and become different in energy based on their orientation towards the ligands.

4 0
3 years ago
A reaction will most likely occur if the colliding particles have the proper
fenix001 [56]
Answer: a rection will most likely occur if the colliding partilces have the proper orientation and energy.


The reactions occur becasue the molecules collide.


But not all the collisions result in a reaction.


The collisions have to meet some requirements.


Two of the basic requirements is that the collision has enough energy to overcome the activation energy and that the molecules collide in the riight way.


When two molecules react it is necessary that one element of one of the molecules interact when a specific element or group in the other molecule. That is the orientation must be the right one.


Collisions that to not have the proper orientation or enough energy will not cause reaction (changes in the bonds of the molecules). 
4 0
3 years ago
You start out with 800 moles of a radioactive substance. After 24 hours, 100 moles remain. What is the half-life of the substanc
Nookie1986 [14]

The half life of the substance is 8 hours , Option D is the correct answer.

<h3></h3>

What is Half Life ?

Half-life is the time required by an unstable element  to reduce to half of its initial value.

The term is commonly used in nuclear physics.

The formula is

\rm N(t) = \; N_{0} \;(\dfrac{1}{2} )^{\frac{t}{t_{1/2} } }

N(t)     =    quantity of the substance remaining

N ₀      =    initial quantity of the substance

t    =  time elapsed

\rm t_{1/2}    =    half life of the substance

The data given in the question is N ₀ = 800 moles , N(t)= 100 , t= 24 hours

\rm t_{1/2} =\; ?

Substituting values in the equation

\rm 100 = \; 800 \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }

\rm \dfrac{100}{800}  =  \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm \dfrac{1}{8}  =  \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm (\dfrac{1}{2})^{3}  =  \;(\dfrac{1}{2} )^{\frac{24}{t_{1/2} } }\\\\\rm 3=\dfrac{24}{t_{1/2} }\\\\t_{1/2}= \dfrac{24}{3}\\\\t_{1/2} = 8 hours

Therefore half life of the substance is 8 hours , Option D is the correct answer.

To know more about Half Life

brainly.com/question/24710827

#SPJ2

3 0
2 years ago
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