Locard's exchange principle implies all of the following except Soil samples can be carried from the yard into your home
Blood splatter can be used to identify blood type
O Cat hair can be transferred to your pants
O Fibers can be transferred from one person to another

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Which of these is a physical property

Answer asap need by wednesday morning explain how a buffer works, using an ethanoic acid/sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.