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Allushta [10]
3 years ago
10

Photosynthesis and glucose metabolism are able to use energy from the sun or glucose molecules to push hydrogen ions against the

ir concentration gradient. This stored energy can then be harnessed to synthesize ATP. The process of pushing hydrogen ions across the membrane against their gradient is an example of which of the following?
Chemistry
1 answer:
Gala2k [10]3 years ago
7 0

Answer:

Osmosis

Explanation:

The osmosis is a movement from somewhere with a lower concentration of a substance to somewhere with a higher concentration of the same substance. Against the concentration gradient. It occurs through a semi permeable membrane which prevents a non desired substance cross it. Also, it's very important to biological process.

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Kati was in the kitchen when she heard a crash. She went into her bedroom and found her window broken and a baseball lying on th
mart [117]

Answer:  inference because she drew a conclusion based on evidence.

why?:

Because the evidence was that she heard the crashing sound, and then when she came into her room saw the broken window and baseball.

It was not an observation because she did not directly see the baseball going through the window

5 0
3 years ago
Read 2 more answers
As the [H] In a solution decreases, what happens to the [OH-]?
valentinak56 [21]
C. It increases and the pH stays constant.
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3 years ago
It is expected that a chemical reaction will occur when copper metal is combined with aqueous zinc sulfate. Explain why there wi
REY [17]

Answer:

E_{cell}= +ve, reaction is spontaneous

E_{cell}= -ve, reaction is non spontaneous

E_{cell}= 0, reaction is in equilibrium

Case 1: when copper metal is combined with aqueous zinc sulfate.

Cu+ZnSO_4\rightarrow Zn+CuSO_4

Here copper is undergoing oxidation ad thus acts as anode and zinc is undergoing reduction , thus acts as cathode.

E^o_{cell} = standard electrode potential =E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

E^0_{[Cu^{2+}/Cu]}= +0.34V

E^0_{[Zn^{2+}/Zn]}= -0.76V

E^0=E^0_{[Zn^{2+}/Zn]}- E^0_{[Cu^{2+}/Cu]}

E^0=-0.76-(+0.34)=-1.10V

Thus as E_{cell} is negative , the reaction is non spontaneous.

Case 2: when zinc metal and aqueous copper sulfate solution are combined.

Zn+CuSO_4\rightarrow Cu+ZnSO_4

Here zinc is undergoing oxidation ad thus acts as anode and copper is undergoing reduction , thus acts as cathode.

E^o_{cell} = standard electrode potential =E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

E^0_{[Cu^{2+}/Cu]}= +0.34V

E^0_{[Zn^{2+}/Zn]}= -0.76V

E^0=E^0_{[Cu^{2+}/Cu]}- E^0_{[Zn^{2+}/Zn]}

E^0=+0.34-(-0.76)=+1.10V

Thus as E_{cell} is positive , the reaction is spontaneous.

3 0
4 years ago
How does the chemical formula for water influence its chemical properties?
OLga [1]

The chemical formula is composed of hydrogen and oxygen where the two atoms are bonded through hydrogen bond type of bonding. In this pair, the oxygen is the more electronegative atom hence the electrons are more directed to it. Because of this, this creates electron polarity which affects the chemical property of water.

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5 0
3 years ago
Read the following chemical equations. Reaction 1: H2S + Cl2 → 2HCl + S Reaction 2: Fe + S → FeS Which of the following statemen
DIA [1.3K]

Answer:

D. Chlorine is reduced in reaction 1 and iron is oxidized in reaction 2.

Explanation:

  • Reduction is the process where by the Oxidation number or state of an element or substance is reduce.
  • Oxidation is the increase in oxidation number or state of any element or substance
8 0
3 years ago
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