Given 200ul of a 0.5mg/ml stock solution of BSA, how much do you pipet into a test tube so that you are adding 5ug of BSA to the test tube

of volume needs to be pipetted out in the test tube.

Explanation:

We are given:

Mass of BSA to be formed =      (Conversion factor:

Volume of stock solution =    (Conversion factor:

It is also given that for the mass of BSA is 0.5 g, the volume used up is 1 mL

In order to have, 0.005 g, the volume of stock solution needed will be =

Hence, of volume needs to be pipetted out in the test tube.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock