lab exam 1- ex 2 Flashcards
(9 cards)
1
Q
molarity (M)
A
number of moles of a solute divided by the liter o solution
2
Q
moles
A
weight/MW
3
Q
stock solution
A
more concentrated, save time, conserve materials, reduce needed storage space, and improve the accuracy of preparation of solutions and reagents
4
Q
working solution
A
solution being used
5
Q
diluting a stock
A
C1 x V1 = C2 x V2
6
Q
supernatant
A
upper layer of fluid after a mixture has been centrifuged
7
Q
enyzmes
A
proteins that speed up (catalyze) chemical reactions
8
Q
tyrosinase
A
enzyme found in many plants and animals, biochemical pathway, formation of melanin
9
Q
buffers
A
solutions which resists changes in pH upon addition of small amounts of acid or base, contain an acidic and basic component
