2points
maria was riding her bike at a velocity of 3 m/s to the north. her velocity
changed to 11 m/s to the north. what was her change in velocity?
a. -8 m/s north
o
b. 3 m/s north
o
c. 8 m/s north
o
d. 14 m/s north

The correct answer it 8 m/s north

Explanation:

My test answers

yea hi

explanation:

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.