Answer:
25 gram
Explanation:
the minimum amount of the reactant needed is equal to the mass of the product because of the law of conservation of mass ok
Nitrogen atomic no.=7
electron=7its electronic configuration =1s2 2s2 2p3
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The alkaline permanent waves have a pH between 9.0 to 9.6.
<h3>What are Alkaline permanent waves?</h3>
Alkaline permanent waves are chemical that is apply to the hair. The alkaline perm makes the hair curly or wavy.
The major ingredient is the ammonium thioglycolate and ammonium hydroxide.
The alkaline permanent wave is alkaline in nature and the pH scale for alkaline substances are higher.
pH of 7 depicts neutrality while pH of 7 and above depicts alkalinity.
Therefore, alkaline permanent waves have a pH between 9.0 to 9.6.
learn more on alkaline permanent waves here: brainly.com/question/19756877
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