Wave velocity refers to speed, but can also be speed and direction.
C funnel because the funnel would have a large enough entrance to put a solid through
Answer:
krypton,radon, and silicon
The first step to solve this problem is to multiply the volume of solution times its concentration to find the number of moles needed, remember that M=mol/L:

Now, use the molar mass of sucrose to find the number of grams needed to make the solution. This is, multiply the number of moles needed times the molar mass:

It means that to make 0.500L of a 0.475M you will have to weigh 81.225g of sucrose.
I think a shovel is a wedge simple machine.