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Westkost [7]
3 years ago
15

What is the #1 or main component of the earths ancient atmosphere?

Chemistry
1 answer:
mars1129 [50]3 years ago
8 0
I am pretty sure it was composed of mostly CO₂.  
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In atomic science, the z number refers to the number of __________ in the nucleus of an atom.
Sliva [168]
By convention, the symbol Z is assigned to the number of protons in the nucleus, or simply, the atomic number of an element. This is actually used when you want to determine the effective nuclear charge of a specific electron of an element. The equation is:

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3 years ago
Part 1: Name the type of chemical reaction that occurs when magnesium chloride solution (MgCl2) reacts with sodium carbonate sol
garri49 [273]

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Explanation:

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3 years ago
What did Dalton's atomic theory contribute to science?
Serga [27]

Answer:

B

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3. Atoms of different elements have different weights and different chemical properties.

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5. Atoms cannot be created or destroyed. When a compound decomposes, the atoms are recovered unchanged.

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