(AKS 4d) When given 5 g of a mysterious white powder to identify, two students discuss how to plan an experiment to determine the identity of
the unknown powder. They know it is one of the six substances. Which of
the following is a logical first step in an experiment that could be used to
determine the identity of the mystery powder? (DOK 2)
Pick one physical property and test it on the mysterious powder first
before doing anymore planning.
Use the 5 g of white powder to determine if it is flammable or not
before doing anymore planning.
Determine physical and chemical tests for the six known substances
and then compare the mystery powder's properties to these.

i know insulin is primary but i dont know the others im sorry

explanation:

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.

they are made of gases.

they have a spherical shape.

they make energy through fusion.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.