Which soil cannot be rolled into balls or clumps?
a. silt
b. sand
c. loam
d. clay

B. Sand  

Because as you may be able to see it just goes through your fingers.

For example if you go to the beach and pick up a handful of sand, then let go. It will most likely fall out of your hands.

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.