By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Answer is: hydrogen cyanide (formonitrile).
Anion CN⁻ is cyanide. Cyanide <span>consists of a </span>carbon<span> atom </span>triple bonded<span> to a </span>nitrogen atom (<span>C≡N).</span>
Hydrogen cyanide is colorless, poisonous liquid, <span>also weakly </span>acidic. Salts<span> of the cyanide anion are called cyanides.</span>
Answer:
At anode - 
At cathode - 
Explanation:
Electrolysis of NaBr:
Water will exist as:
The salt, NaBr will dissociate as:
At the anode, oxidation takes place, as shown below.
At the cathode, reduction takes place, as shown below.
Answer:heat of vaporization of water = 2257 J/g
Explanation:
The best answer is no bc the question ask "Would the two as yet undiscovered element A+1 and D+2" don't sound right
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