Which salt is produced when H₂SO4 reacts with NaOH? O K₂SO3 O Na₂SO4 O Na₂SO3 OK₂SO4

Humans could try to pollinate food crops by hand, but this would be expensive and time consuming. Natural pollinators, like bees

malfutka [58]

B. Regulating Services

Explanation:

Pollination is an example of regulating ecosystem service.

Ecosystem services are the direct and indirect contribution to human life.
Humans relies on the ecosystem for a wide range of provisions.
These services are categorized into different forms.
Regulating services are the values derived from controlling the ecosystem.
Pollination is one of such things.
Plants are pollinated by insects. This helps to continue and sustain life.
Pollination helps to fertilize plants and ensures reproduction.

learn more:

Ecosystem brainly.com/question/7846024

#learnwithBrainly

3 0

3 years ago

Using the following standard reduction potentials, Fe3+(aq) + e- → Fe2+(aq) E° = +0.77 V Ni2+(aq) + 2 e- → Ni(s) E° = -0.23 V ca

lina2011 [118]

Answer: The above reaction is non-spontaneous.

Explanation:

For the given chemical reaction:

$Ni^{2+}(aq.)+2Fe^{2+}(aq.)\rightarrow 2Fe^{3+}(aq.)+Ni(s)$

Here, nickel is getting reduced because it is gaining electrons and iron is getting oxidized because it is loosing electrons.

We know that:

$E^o_{(Fe^{3+}/Fe^{2+})}=0.77V\\E^o_{(Ni^{2+}/Ni)}=-0.23V$

Substance getting oxidized always act as anode and the one getting reduced always act as cathode.

To calculate the $E^o_{cell}$ of the reaction, we use the equation:

$E^o_{cell}=E^o_{cathode}-E^o_{anode}$

$E^o_{cell}=-0.23-0.77=-1.0V$

Relationship between standard Gibbs free energy and standard electrode potential follows:

$\Delta G^o=-nFE^o_{cell}$

As, the standard electrode potential of the cell is coming out to be negative for the above cell. Thus, the standard Gibbs free energy change of the reaction will become positive making the reaction non-spontaneous.

Hence, the above reaction is non-spontaneous.

3 0

3 years ago

Write electronic configuration of chlorine in its ionic state?

MrMuchimi

Answer:

1s2 2s2 2p6 3s2 3p6

Explanation:

Chlorine is a groups 17 element. The halogens for ions by accepting one electron to form univalent negative ions.

Since chlorine normally contains seventeen electrons, the chloride ion consists of eighteen electrons.

Hence the electronic configuration of chlorine ion is; 1s2 2s2 2p6 3s2 3p6.

7 0

2 years ago

What are two examples of a chemical change

lyudmila [28]

Answer:

1.Cooking an egg

2. Burning wood

Hope it helps :)

6 0

2 years ago

Read 2 more answers

What I know about the Alveoli and Gas exchange

Reptile [31]

Explanation:

What happens during gas exchange in the alveoli?

These are called alveoli. They inflate when a person inhales and deflate when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.

What is the role of alveoli in gas exchange?

The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out. Oxygen breathed in from the air passes through the alveoli and into the blood and travels to the tissues throughout the body.

7 0

2 years ago