When zinc is placed in hydrochloric acid (HCl). hydrogen gas and zinc chloride are produced. How many grams of HCl would need to react to produce 3.21 grams of hydrogen gas? Zn + 2HCl --> ZnCl2 + H2 a 115.88 g HCl b 84.83 g HCl c 28.38 g HCl d 42.42 g HCl

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?