The correct answer is option (B) lemon juice.
pH refers to the logarithmic scale used to indicate the acidity or basicity of an aqueous solution. It is the negative of the base 10 logarithm of the activity of the hydrogen ion. Solutions with a pH less that 7 are considered acidic and the solutions with a pH greater that 7 are considered to be basic. A pH of 7 is neither an acid nor a base and is considered neutral.
An acid has a high concentration of hydrogen ions (H+) and a base has a low concentration of hydrogen ions. Higher the hydrogen ion concentration, pH is acidic. Among the given substances, lemon juice has a pH of 2, urine has a pH of 6, tomato juice has a pH of 4 and black coffee has a pH of 5. Since lemon juice has a pH of 2, it has the lowest –OH ion concentration.
Answer:
it is used to make alcohol
it is used in bread industries
it is used to clean up the environment
Explanation:
Buddha is shown symbolically through a wheel or footprints as well as Mahayan symbols. The Eight-Spoked Dharma Wheel portrays, In which the Buddha is turning the Wheel of Truth. It is the most important of all the buddhism symbols. Footprints represents the physical presence of Buddha.
<span>C. A greater number of wavelengths pass a given point per second.
hope this helps
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