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4 years ago

Here is a food chain in a meadow. Use this food chain to answer this question.

Chemistry

2 answers:

guajiro [1.7K]4 years ago

8 0

D. Hawk

The highest trophic level in a food chain is often shown as literally being the highest in the diagram. Although this food chain is set up differently, you can still tell that the hawk is the highest trophic level because all the arrows point in its direction.

N76 [4]4 years ago

5 0

D Hawk is the answer hope it helps

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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

Question 1 of 10

kati45 [8]

I believe the answer is C.

3 0

3 years ago

if 0.582 moles of zinc reacts with excess lead(IV) sulfate how many grams are zinc sulfate would be produced? can someone help m

love history [14]

Balanced equation:
Pb(SO₄)₂ + 2 Zn → 2 ZnSO₄ + Pb
From the equation we found that 2 moles of Zn form 2 moles of ZnSO₄
so 0.582 mole of Zn will produce 0.582 ZnSO₄
Molar mass of ZnSO₄ = 161.47 g/mole
Mass of ZnSO₄ formed = 161.47 x 0.582 = 94.0 grams

7 0

3 years ago

What is the minimum number of liters of co2 measured at stp needed to produce 32 grams of oxygen?

bulgar [2K]

236 I DONT KNOW I AM TOTALLY THAT IS NOT THE ANSWER

4 0

4 years ago

Which formula contains two no-metals a NaBr B BaO C KI D So O2

cricket20 [7]

Answer:

D. SO₂

Explanation:

Non-metals are elements that react by gaining electrons to attain a stable configuration and form an anion.
Non-metal elements are found in groups, 5, 6, 7 and 8 of the periodic table. Halogens are an example of non-metals that gain an electron to form anions.
SO₂ is a compound whose molecule contains sulfur and oxygen which are non-metals. The sulfur and oxygen atoms are joined together by a covalent bond to form SO₂.

7 0

3 years ago