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:
Hypotonic solution
Explanation:
hypertonic solution is the one you get when the solute concentration of the water is higher than that of the cells.
isotonic solution is the one you get when the solute concentration of the cell and the water are the same.
hypotonic is the one that you get when the solute concentration of the cell is higher than that of the waters.
Solute concentration being low reminds me of water. Hypo kind of sounds like hippo and hippos love water. You can use this to memorize the difference between hypertonic and hypotonic solutions.
sorry if the grammer is bad i tried my best.
About 90% of our DNA is the same.
Answer:
its b sunlight
Explanation: because why would a plant grow according to pressure gravity or touch.
