Ie-hairdressing-craft-l6 Practice Questions - QQI Level 6 Advanced Certificate Craft - Hairdressing Exam

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A senior colorist is diluting a 30-volume (9%) hydrogen peroxide solution to obtain a 20-volume (6%) solution. What is the correct mixing ratio of 30-volume peroxide to water?

1 part 30-volume peroxide to 1 part water 2 parts 30-volume peroxide to 1 part water 3 parts 30-volume peroxide to 1 part water 2 parts 30-volume peroxide to 2 parts water

Correct Answer:

2 parts 30-volume peroxide to 1 part water

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