The supercontinent that existed about 200 million years ago was named

Answers

Answer 1
Answer: This was Pangaea! (was named like this in 1912)

It started existing around 300 million years ago and started falling apart around 175 million years ago.
Answer 2
Answer:

Answer:

Pangaea

Explanation:


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What is the molarity of a solution that contains 0.50 mole of Naoh in 0.5p liter of solution

Answers

The concentration pertains to the molarity of the solution with an equation of mol of solution per liter of solvent.  

M (molarity) = moles of solute/L of solvent

M (molarity) = 0.5 mol NaOH / 0.5 L

M (molarity) = 1 M NaOH

The strength of a weak base is indicated by its "ionization constant Kb." The greater the value of Kb, the _____ the base. a) Weaker b) Stronger c) More neutral d) Less reactive

Answers

Kb is known as the base dissociation constant and the larger the value of kb the stronger the base. However, at times the values of kb are very small when dealing with calculations of weak bases. Hence, pKb is often used. Pkb = -lg(Kb)

What is the correct name for SiCl5?

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Answer:

SbCl5

Antimony pentachloride

Antimony pentachloride is a chemical compound with the formula SbCl5.

- wikipedia

Which celestial object is found in the Kuiper Belt?

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Beyond the planet Neptune is found a region filled with icy bodies. This region is known as the Kuiper Belt. This holds trillions of objects which is said to be remnants of the early solar system. The region contains comets and dwarf planets.

What is the difference between a period and a group on the periodic table

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A period is the colums goi
ng down on the periodic table, and the groups are the rows going across
Periods go left to right in a straight line.  Anything in the same ROW is a Period.
Groups are up to down.  These groups have the same number of outer shell electrons.  There are 12 groups.

How might you estimate the minimum temperature

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To estimate for the minimum temperature of a daily forecast of low temperature, the first estimate would be the dew point temperature approximately an hour before the daily high temperature is reached. I hope this helps you on your assignment.