We're doing a lab report on the hardness of water, and one of the calculations is
"The EDTA reacts with the hard water ions in a 1:1 mole ratio. Calculate the molarity of the ions present in 20 mL of water tested."
How would you do this?
2 answers
volume and mass
A weather ballon with a 2 meter diameter at ambient temperature holds 525 grams of helium. What type of electronic probe could be used to determine the pressure inside the balloon?
3 answers