7. Which quantity of particles is correctly represented by
the formula H2SO4?
A) 1.0 mole of ions
B) 1.0 mole of molecules
C) 6.0 * 1023 ions
D) 6.0 x 1023 atoms

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

plasma - state of matter made up of electrically charged particles