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3 years ago

What is Pangea? please help fast

Chemistry

2 answers:

jarptica [38.1K]3 years ago

6 0

Pangea was a continent that existed during the late Paleozoic and the early Mesozoic era. Pangea was all of the continents that we have today combined. Attached is an image of the Pangea map. Hope this helps! :)

<h3>CloutAnswers</h3>

Cloud [144]3 years ago

4 0

Pangea was the only continent before the flood.

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What pressure (in atm) will a sample of o2 gas occupy at 100.0 ml, if o2 has a volume of 25.00 ml at 2.0 atm?

xeze [42]

Assuming that the O2 gas acts like an ideal gas, we find the following expression to be approximates of the behaviour of this gas:

P V = n R T ---> 1

where,

P = pressure exerted by the gas

V = volume occupied

n = number of moles

R = universal gas constant

T = absolute temperature

Further, we assume that the number of moles and the temperature are constant, hence reducing equation 1 into the form:

P V = k ---> 2

where k is a constant. Therefore we can equate two states:

P1 V1 = P2 V2

Since P1, V1 and V2 are given and we are to look for P2:

25 mL * 2 atm = 100 mL * P2

P2 = 0.5 atm

8 0

3 years ago

Read 2 more answers

In the diagram above, what is the temperature doing while the ice is

Anestetic [448]

Answer:

temperature is increasing

hope my answer is helpful to you

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7 0

3 years ago

¿Cuál era su juego favorito cuando eran niños?

blagie [28]

Answer:

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Explanation:

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3 years ago

What are the effects of acid precipitation in city centers

Rus_ich [418]

Answer:

Answer to the following question is as follows.

Explanation:

Acid rain causes harm to houses and buildings by dissolving stone or corroding metal exposed to the elements. Acid rain can degrade calcium carbonate or calcium-based chemicals found in some of these products.

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3 years ago

Phosphorus pentachloride reacts with water to form hydrochloric acid and phosphoric acid. How many total moles of acid are forme

klio [65]

Answer:

0,13 moles of acid are produced

Explanation:

The reaction of the problem is:

PCl₅ + 4H₂O → 5HCl + H₃PO₄

Based on the reaction, 1 mole of PCl₅ produces 6 moles of acid (5 moles of HCl + 1 mole of H₃PO₄).

The molecular mass of PCl₅ is:

1P = 30,97g/mol + 5Cl = 5×35,45g/mol = 208,24 g/mol

That means 4,5g of PCl₅ are:

4,5g PCl₅×(1mol / 208,24g) = 0,0216 moles of PCl₅. As 1 mole of PCl₅ produces 6 moles of acid, 0,0216 moles of PCl₅ produce:

0,0216 moles PCl₅ × (6 moles acid / mole of PCl₅) =

0,13 moles of acid are produced

I hope it helps!

3 0

3 years ago