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dybincka [34]
3 years ago
10

The continents may not have drifted slowly into their present positions. True False

Chemistry
2 answers:
12345 [234]3 years ago
7 0
True, look up pangea
vichka [17]3 years ago
6 0

Answer:

FALSE

Explanation:

According to the continental drift theory, the continents moved from one place to another with respect to the poles. Although many pieces of evidence had been contributed by Mr. Alfred Wegener, the main mechanism behind this was not able to explain.

Later on, this theory modified into a new one, commonly known as the plate tectonic theory that explains that the continents move over the layer of the asthenosphere due to the formation of convection current in the mantle. This is possible because of the heat radiated from the interior of the earth.

Thus, it was concluded that initially the earth was comprised of a single super-continent named 'Pangea', which got split into Laurasia and Gondwanaland due to the plate tectonic movement. This process further continued at a much slower rate which resulted in the present-day location of the continents.

Thus, the above-given statement is False.

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Suppose a current of is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for s
WARRIOR [948]

The given question is incomplete. The complete question is:

Suppose a current of 0.920 A is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 47.0 seconds. Calculate the mass of pure silver deposited on a metal object made into the cathode of the cell.

Answer:   0.0484 g

Explanation:

Q=I\times t

where Q= quantity of electricity in coloumbs

I = current in amperes = 0.920 A

t= time in seconds = 47.0 sec

Q=0.920A\times 47.0s=43.24C

AgNO_3\rightarrow Ag^++NO_3^-

Ag^++e^-\rightarrow Ag

96500 Coloumb of electricity electrolyzes 1 mole of Ag

43.24 C of electricity deposits =\frac{1}{96500}\times 43.24=0.00045moles of Ag

\text{ mass of Ag}={\text{no of moles}\times {\text{Molar mass}}=0.00045mol\times 108g=0.0484g

Thus the mass of pure silver deposited on a metal object made into the cathode of the cell is 0.0484 g

6 0
3 years ago
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timama [110]

Answer:

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Explanation:

The metal which requires to be protected from rust is connected to the anode while a lower metal in the series is connected to the cathode, the a complete circuit is made and current is passed through the circuit there by resulting to the coating of the metal at the anode.

7 0
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What would be the correct answer please help!
bogdanovich [222]

Answer:

first number is the correct answer

6 0
3 years ago
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djyliett [7]
The mitosis is the cell division so it both B and C
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Explanation:

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