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3 years ago

Why does my dogs poop look green?

1 answer:

5 0

Your dog may be eating a lot of vegetables. If not that, then they may be having stomach issues/something wrong with their diet.

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What gets oxidized in a galvanic cell made with magnesium and zinc electrodes?

ankoles [38]

Answer: Magnesium

Explanation:

Galvanic cell is a device which is used for the conversion of the chemical energy produces in a redox reaction into the electrical energy.

The standard reduction potential for magnesium and zinc are as follows:

$E^0_{[Mg^{2+}/Mg]}= -2.37V$

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

Reduction takes place easily if the standard reduction potential is higher (positive) and oxidation takes place easily if the standard reduction potential is less (more negative).

Here Mg undergoes oxidation by loss of electrons, thus act as anode. Zinc undergoes reduction by gain of electrons and thus act as cathode.

$Mg\rightarrow Mg^{2+}+2e^-$

$Zn^{2+}+2e^-\rightarrow Zn$

Thus magnesium gets oxidized.

4 0

3 years ago

Read 2 more answers

In a water molecule the two unshared pairs of electrons on the oxygen cause the water molecule to have a _______ geometric shape

Luba_88 [7]

Answer:

1. Bent geometric shape

2. Polar molecule

6 0

4 years ago

Write the balanced equation for the neutralization reaction between HCl and Ba(OH)2 in an aqueous solution. Phases are optional.

ad-work [718]

Explanation:

2HCl + Ba(OH)2 ------> BaCl2 + 2H2O

4 0

3 years ago

Calculate the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L.

Aleonysh [2.5K]

Answer: $15.5^0C$

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 0.987 atm

V = Volume of gas = 12 L

n = number of moles = 0.50

R = gas constant = $0.0821Latm/Kmol$

T =temperature = ?

$T=\frac{PV}{nR}$

$T=\frac{0.987atm\times 12L}{0.0820 L atm/K mol\times 0.50mol}=288.5K=(288.5-273)^0C=15.5^0C$

Thus the temperature of a 0.50 mol sample of a gas at 0.987 atm and a volume of 12 L is $15.5^0C$

8 0

3 years ago

Energy can be extracted from water by:___________

SOVA2 [1]

Answer:

5. All of the above.

Explanation:

Energy can be extracted from water by gravitational force as done in hydroelectric plants, temperature gradients that creates natural convection processes, the mechanical variations of ocean currents and surface waves, and by nuclear fussion.

5 0

4 years ago