The pH of lemon juice is about 2.0, whereas tomatojuice's pH is about 4.0. Approximately how much of anincrease in hydrogen ion concentration is there betweentomato juice and lemon juice

100 times

Explanation:

The pH of the lemon juice 2 and the pH of the tomato juice is 4. The pH scale represents the change in the concentration by a factor of 10.

The lemon juice has a pH of 2 and tomatojuice has a pH of 4 so the difference is 10 *10 =100.

The concentration change will be 100 times. On the pH scale the lemon juice is 100 times more acidic as compared to that of the tomato juice.

i think its the first one

trachea, alveoli, lung capillaries, arteries