# Posts by estelle

Total # Posts: 5

**Math 8**

b.11

**math**

is 1 divided with every number

**chem**

it's just a solution. I'm not sure how to find the volume dilution... this is a dilution problem.

**chem**

What is the volume of 0.25M PMSF & volume of 14.3M 2-mercaptoethanol needed in 25 mL of 20 mM sodium phosphate? MW of sodium sulfate = 137.99

**geomery**

find the surface area of a triangular pyramid with the base 12in the height 12in and the perimeter 12in