Record the amount of solute left after one minute of stirring for each solution. Beaker Amount of solute at start (g)(first number beside A, B, or C) Amount of solute at end (g)(second number beside A, B or C) Solution with Compound A 50 0 Solution with Compound B 50 15 Plain water in Beaker C 0 0 Variables – Procedure 1 1. What was the independent variable in Procedure 1? (1 point) Solution A, B, and C 2. What was the dependent variable in Procedure 1? (1 point) The boiling point 3. List three (3) controlled variables in Procedure 1. (1 point) (Hint: NOT Beaker C with the plain water)

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.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.