Ling is doing a science project. She likes to exercise. She wants to find out about heart rates. She wants to see how long it takes for heart rates to slow down to normal after exercise.

Is this a single replacement reaction or there is no

What can be done to make a solid solute dissolve faster in a liquid solvent?

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity