Which of the following is an extensive property of a sample of aluminum?
1 answer:
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Answer:
The fourth one down
Explanation:
It is the only setup in which the units of "cm" and "in" cancel correctly and give the desired units of "ft."
The second one down has the correct units but the wrong conversion factor for converting centimetres to inches.
Answer: the pH moves to 0 on the pH scale
Explanation:
A base is defined as a substance which donates hydroxide ions when dissolved in water and an acid is defined as a substance which donates hydrogen ions in water.
Neutralisation reaction is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule. The ions from acid are neutralised by
ions from base.
Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH of 7.