Question

PLease help thank you!

3. Select the answer that best describes this statement:

I. The resistance of a liquid to flow is ---> A) surface tension B) capillary action C) viscosity D) adhesion E) none of these

II. The resistance of liquid to an increase in its surface area is called---> A) capillary action B) surface tension C)vapor pressure D)viscosity E)none of these

4. When the adhesive forces between a liquid and the walls of a capillary tube are greater than the cohesive forces within the liquid

(A) the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a convex meniscus

(B) the liquid level in a capillary tube will rise above the surrounding liquid and the surface in the capillary tube will have a concave meniscus

(C) the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a convex meniscus

(D) the liquid level in a capillary tube will drop below the surrounding liquid and the surface in the capillary tube will have a concave meniscus

5. A crystal was analyzed with x-rays having 1.57 à wavelength. A reflection was produced at q = 21.9°. Assuming n = 1, what is the distance between the layers of atoms in the crystal?

A) 8.42 Ã B) 4.21 Ã C) 0.475 Ã D) 0.846 Ã E) 2.10 Ã

THANK YOU AGAIN!