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3 years ago

How did Wegener explain why fossils of land animals were found on continents that are across oceans from one another?

Chemistry

2 answers:

slamgirl [31]3 years ago

8 0

He explained that with continental drift

levacccp [35]3 years ago

5 0

Answer:

Alfred Wegener gave the continental drift theory. On the basis of his theory, the world was a solitary compressed protocontinent at the beginning, which afterward got drifted away into distinct continents as seen today. He named this protocontinent as Pangaea that means all the lands. In order to support this theory, he further stated that a land bridge once prevailed between Africa and Brazil, and thus, one can witness identical fossilized animals and plants in the two parts of the planet.

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What is the molarity of a strong acid solution with a pH of 3?

Anna35 [415]

Answer:

Since HCl is a strong acid, it completely ionizes, and the pH of HCl in solution can be found from the concentration (molarity) of the H+ ions, by definition equal to 0.100 M. (The conjugate base of the acid, which is the chloride ion Cl–, would also have a concentration of 0.100 M.) The pH is thus –log(0.100) = 1.000.

Explanation:

6 0

3 years ago

You have a red ballooe that has a volume of 20 liters, a pressure of 1.5 atmospheres and a temperature of 28 C. What is the volu

ki77a [65]

Explanation:

The given data is as follows.

$P_{1}$ = 1.5 atm, $V_{1}$ = 20 L, $T_{1}$ = (28 + 273) K = 301 K

$P_{2}$ = 5 atm, $V_{2}$ = ?, $T_{2}$ = (50 + 273) K = 323 K

Formula to calculate the volume will be as follows.

$\frac{P_{1} \times V_{1}}{T_{1}}$ = $\frac{P_{2} \times V_{2}}{T_{2}}$

Putting the given values into the above formula as follows.

$\frac{P_{1} \times V_{1}}{T_{1}}$ = $\frac{P_{2} \times V_{2}}{T_{2}}$

$\frac{1.5 atm \times 20 L}{301 K}$ = $\frac{5 atm \times V_{2}}{323 K}$

$V_{2}$ = 0.64 L

Thus, we can conclude that the change in volume of the balloon will be 0.64 L.

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3 years ago

When rolling a die, find the probability of rolling an even number or rolling a

frozen [14]

<h3><em><u>ᎪꪀsωꫀᏒ</u></em></h3>

even no = 3/6 = 1/2

no. less than 5 = 4/6 = 2/3

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3 years ago

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slavikrds [6]

In order to properly measure the displacement, the object must be completely submerged, however in the diagram the wood is floating. So the measured displacement will only be a fraction of what it actually is.

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3 years ago

The surface of what he can act like a sort of skin due to a Liquid called

PIT_PIT [208]

A Liquid called Surface Tension.

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4 years ago