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Sav [38]
3 years ago
9

Are pterosaurs more closely related to turtles or to crocodilians? Explain your answer.

Chemistry
1 answer:
Reptile [31]3 years ago
8 0

Answer:

Pterosaurs are more closely related to crocodilians. They share a more recent common ancestor than do pterosaurs and turtles.

Explanation:

Hope this Helps! :)

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A sample of hydrogen gas at 1.50 atm and constant volume is heated from 0∘C to 150∘C. What will be the final pressure of the gas
Julli [10]

Answer:

2.32

Explanation:

For the resolution of the problem one of the laws of Charles - Gay Lussac must be used, in which it is stated that if a<em> certain amount of gas is kept at a constant volume (as in this case), its pressure will be directly proportional to its absolute temperature.</em> Mathematically, it can be written as follows:

\frac{P}{T} = Constant ⇒to constant V

In the case of the statement, that we have an initial system (P₁ and T₁) and an final system (P₂ and T₂), the equation can be written:

\frac{P1}{T1} = \frac{P2}{T2}

It can be rearranged to clear P₂ which is what needs to be calculated, then:

P2=\frac{P1 . T2}{T1}

It would only be necessary to <em>convert the temperature units from ° C to K</em>, to have the absolute temperature values. If T (K) = t (° C) + 273.15, then:

T₁ = 0 + 273.15 = 273.15 K

T₂ = 150 + 273.15 = 423.15 K

Now, you can replace the values ​​to the equation and calculate P₂

P2 = \frac{1.50 atm . 423.15K}{273.15 K} = 2.3237atm ≅ 2.32 atm

As the statement requests the result with three significant figures and no units, the answer is that<em> the final pressure is 2.32</em>

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3 years ago
There are 20 mice in a 5 m2 field ecosystem. The population density of mice is _____.
Anna11 [10]

Answer:

4per m 2

20 mice divided by 5 so it will be 4 per m 2

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What is the combustion reaction for octene​
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