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zvonat [6]
3 years ago
13

List three differences between the earth 240 million years ago and the present earth.

Chemistry
1 answer:
raketka [301]3 years ago
4 0
Dinosaurs, cavemen, sabertooth tiger
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Which of the following statements is true?
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Lines of latitude are used to divide Earth into 24 time zones

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Why will frequency decrease when wave gets longer
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How many kilojoules is 1,500,000 calories
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An element that appears in the lower left corner of the periodic table is
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This problem is honestly, very easy. Just grab a periodic table and find the element in Group 1 and Period 7. But first, let's discuss how the elements are arranged systematically in a periodic table. There are a lot of scientists who contributed to it, but the most famous one is Dimitri Mendeleev. He arranged the elements according to their atomic number. The elements starts from 1 which is Hydrogen up to the heaviest known elements which is Oganesson with an atomic number of 118. As you can observe, there is a gap between groups 3 and 4. This is done so that the periodic table does not take too much space horizontally. Thus, they are just placed at the bottom. These elements are called lanthanides (upper row) and actinides (lower row). The rows in the periodic table are called groups, and the columns are called periods.

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Dennis_Churaev [7]

Explanation:

  Reaction equation:

             CO + 2H₂  →  CH₃OH

All the species are in gaseous state and the equation is balanced.

 Change in pressure only affects equilibrium involving a gas or gases.

Based on Le Chatelier's principle, an increase in pressure will shift the position of equilibrium to the side having smaller volume or number of moles and vice versa.

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 3moles of gases     1 mole of gas

  An increase in pressure favors the forward reaction. A decrease in pressure will favor the backward step.

7 0
2 years ago
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