Parts per million (ppm) is a unit typically used to express the concentration of a substance in a solution or mixture. However, ppm can also be used to…
A solution is labeled 512 ppm. The solution is made with a solute that has a molar mass equal to 338 g/mol. What is the molarity of the solution? A solution is made by dissolving 9.15 grams of solute in 50.0 grams of water. What is...
What is a method in analytical chemistry? What is an endpoint in analytical chemistry? What is spiking in analytical chemistry? What is a resolution in analytical chemistry? What is nucleation in analytical chemistry? What is PPM in analytical chemistry?
This specific titration, which is also known as KF titration, is a classic method used to determine trace amounts of water in a sample. Coulometric titration is used for low water content determination (water contents as low as 1 ppm to 5%), whereas volumetric titration is used to determine...
Basically, I want a formula into which I can plug in the size of my DNA and a few other parameters, and figure out how long I have to run it to get decent separation (the output variable is x because I intend to plot xx over tt for a given planned electrophore...
Eliminating exposure to vapors allows the body to completely recover to normal. The toxic properties of isopentane are not manifest until levels are reached that exceed the minimum fire hazard concentrations. The lower flammability limit of isopentane is 1.4 vol% in air, which is 14,000 ppm....
Chemistry class (Photo Credit : Elegant Solution/Shutterstock) When you see a molecular diagram or read a molecular formula, it may not immediately be apparent whether you are seeing a molecule or a compound. In fact, you may not even know if there is a difference between these two designati...
Titration is a technique of determining the concentration of unknown solution by using a solution of known concentration. The known solution (titrate) is added in drops to the analyte (unknown solution) until the endpoint is reached.
What is the significance of the ether linkage in organic chemistry? The ether linkage is a functional group that imparts unique chemical properties to ethers, such as their ability to act as solvents. 4 What is a polyester, and how is it related to esters? Polyester is a type of polymer...
Non-point source pollution is a serious environmental issue and has attracted a lot of scientific attention. Currently, the influences of grazing on the water and nutrient cycles in alpine meadows, as well as corresponding underlying mechanisms, still remain unclear. The quantitative contributions of ...