5.) For each group, prepare 10 ml of blocking buffer by dissolving powdered non-fat milk in DPBS to a final concentration of 1%. Utilize the station at the back of the lab. Place powdered milk into a clean, empty, 15 ml falcon tube and pour DPBS up to ~8 ml. Pipette the last 1-2 ml of DPBS and vortex well. Use the convention that 1% weight per volume is equal to 1 g solute per 100 ml total volume. Place on ice. How much non-fat milk powder should you weigh to make 10 ml of 1% blocking buffe

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

the answer is d.) potassium