Which numbers are Speed, Velocity or acceleration 1. Grey whales Begin their migration in september traveling south averaging 75 miles per day. 2. A carousel spins in a circular path. 3. An airplane increases speed as it takes off. 4. Usain Bolts fastest running speed was clocked at 27.8 mph. 5. A train is moving at a constant speed of 23 miles per hour.

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.

the temperature of the gas, in k, not celsius.