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gayaneshka [121]
2 years ago
6

What are 5 of the critical events in evolution that occurred in the Paleozoic era?!!

Chemistry
1 answer:
soldi70 [24.7K]2 years ago
5 0

Answer:

Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian

Explanation:

These all occurred in the paleozoic Era I hope you do great good luck <3

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What would be the final temperature of a 73.174g sample
madreJ [45]

The final temperature is -138 °C.

Explanation:

Using the equation of specific heat

Q = m*c* del T

We can easily find the final temperature of a 73.174 g of copper sample. As we know that specific heat is the amount of energy required to raise the temperature of the object to 1°C.

The specific heat of copper is known as 0.387 J/g°C and the initial temperature is said as 102 °C . The mass is given as 73.174 g. The heat released is 6800 J.

Since the heat is released the Q value will be negative.

-6800=0.387*73.174*(T_{final}-102)

T_{final}-102=\frac{-6800}{0.387*73.174} =-240

T_{final} = -240+102=-138

Thus, the final temperature is -138 °C.

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3 years ago
Two groups of students were tested to compare their speed working math problems. Each group was given the same problems. One gro
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3 years ago
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melamori03 [73]
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3 0
3 years ago
Which word or group of words is represented by the word "period" in the term Periodic Table?
leonid [27]
The correct answer is C : energy level.

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Elements belonging to the same period have the same electron shell, the same number of orbits filled with electrons.
Elements of the same period have similar chemical and physical characteristics 

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