Why should the melting point sample be packed tightly in the capillary tube? how might this affect the melting range of your unknown solid? be specific in your explanation.

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

What is the percent by mass of magnesium sulfate in mgso4.7h2o

People who practice which of the following diets may run the risk of not getting enough iron. a. gluten free or vegan diet b. diet for managing diabetes c. vegan diet d. gluten free diet